Here's where it gets a little sticky. I didn't get the installation disk of windows professional when I got the computer, it was already pre-installed. I downloaded this microsoft program that tells you the serial number of your operating system, so I was wondering if I could just borrow a Windows XP Proffesional Setup disk and use my own serial number, because that would not be stealing considering it was already payed for.
Also, I recently did a similar thing with a different computer. I had a Windows XP Home Edition but it was corrupted so I bought a new "Windows XP Home Edition Update" disk. What I was hoping for this to do was as I was saying earlier, delete absolutely any trace of anything on the computer before the reinstallation of the operating system. After I went through the setup I noticed that in "Program Files" there were tons of programs from the old computer that aren't in any way associated with windows on the harddrive. So I was wondering if maybe this time it should not be an update disk, but just a regular setup disk.
Answers to these questions will be very greatly appreciated. Thank you very much for your time.
By the way, the computer that I would like to perform this on, is a Dell Inspiron 5000. I am currently running XP Proffesional on it.