I copied and pasted these instructions that will help.
From this site-http://www.pcuser.co...A256EA80038C9A7
First thing to do, after you've done all the preparatory backing up of data and collecting together of the various bits ‘n' pieces you'll need set up your system again afterwards, is to reboot your system, go into BIOS setup and ensure that your system is set to Boot from CD-ROM as ‘1st Boot Device', and your primary Hard Drive as ‘2nd Boot device'. Make the change(s), if necessary, and then pop your Windows XP CD into the drive, save and exit from BIOS setup, and watch for the text message to pop up asking for you to ‘Press a key to boot from CD-ROM”. Make sure you do so!
You will be asked if you wish to install Windows XP. Press <ENTER> to begin the process. You will then be presented with an ‘End User License Agreement' . Read it if you wish (you really should, you know, but very few people actually do) and you should press <F8> to accept the terms and continue.
Because an existing Windows XP installation is detected, you will be presented with a screen asking if you wish to repair it. Press <Esc> to bypass the process (do not repair).
Wiping your Hard Drives clean
The next screen you are presented with is where most people have difficulty. You will be presented with a screen offering some choices of action, and a list of existing hard drive partitions which also indicate existing Windows installations. My suggestion for the best course of action is this:
* Remove existing partitions
* Create new NTFS partitions
* Install Windows XP on the first partition of your Primary hard drive
Highlight the first partition, press <D> to indicate you wish to delete it, and follow the prompts to remove the partition. Continue the process for other partitions. When you've finished removing the partitions, and are left with a list indicating the drives and the ‘Unpartitioned space' they contain, highlight your primary drive and press <C> to indicate you wish to create a new partition. Type the size (in Megabytes) you wish the partition to be, or press <ENTER> to create a partition using all available space on the drive. Repeat the process until you've created all the partitions you wish to have.
A more detailed description of the process can be found in the section “How to partition and format your hard disk using Windows XP Setup” from the KnowledgeBase article “ HOW TO: Partition and Format a Hard Disk in Windows XP”
Putting Windows XP on your System
When you've finished, highlight the partition you wish to install Windows XP to (the first partition on your Primary Drive is the best) and press <ENTER>.
Follow onscreen prompts during the process of installation, and ensure you leave the Windows XP CD in the drive whenever your system reboots during the process. If you get another prompt to “Press any key to boot from CD” keep your hands in your pockets! You don't want to go back and start over again!
Note : If you are using an XP Upgrade CD, you will be asked for a qualifying product during installation. Pop the CD with your older version of Windows into the drive, press <ENTER> or click ‘OK' as prompted, and return your Windows XP CD to the drive when asked. You may be prompted to ‘Create a Startup disk' and you can safely ‘Cancel' from that step if you do not wish to create a Startup diskette.
Provide such local information as requested during installation, and also such details of existing Local Networks that the system is connected to. Provide details of User Accounts you wish to have on the system, and passwords if you choose to use them. When the process has completed, you will be prompted to ‘Activate' Windows XP. Opt out of Activation at this stage, because it's better to Activate after you got your system fully set up, and have confirmed that all is working as it should. You can also safely bypass the Product Registration, as it serves little practical purpose.
When all is completed, you will need to enter your password, if you've set one, to access the Windows XP Desktop.
Setting Up your System after Windows is Installed
Pop your Windows Security CD into the drive, and install Service Pack 1 if necessary, and the other updates included on it. If you have internet access at this stage via an Ethernet ADSL connection or similar, log onto Windows Update immediately you've done so, and download and Install all other available Security Updates. If you have to install a dial-up modem and configure your Internet access, leave the process until after you've installed your system components and other peripherals, and unsure you use Windows Update as soon as you've gained Internet access.
Note : If you have ADSL Internet access via a USB ADSL modem, I'd strongly suggest you replace your modem with an Ethernet one, and have it configured and connected before you start installing Windows! See “How can I assign IRQ's on an Albatross?” for fuller explanation of my reasons for saying so!
With Windows installed and your Security Updates attended to, it's time to install drivers and driver updates for your system. Do so in this sequence for best results:
* Motherboard chipset drivers
* Display drivers
* Soundcard drivers
* Other internal component drivers
* Other peripheral device drivers
When you have those installed, and have checked that they all function correctly (with no conflicts or problems reported in ‘Device Manager') you can begin the process of setting up you Desktop display as you wish to have it, installing your software, and reloading your backed-up data files. Make your changes one by one, testing carefully after each change to ensure your system is stable. Use ‘System Restore' to create a restore point before each change, in case something you load causes problems.