If you have a paid subscription I presume you will wish to use that.
If you were using a free edition I recommend this one, there are many others to choose from, but this is the one I use and it is recommended on Geeks
If you do not have network connection or sound etc or high quality graphics you will ned to go to the Dell site link. I gave you in the first place,,Drivers and downloads select desktop optiplex, 755 and then your operating system ie XP - make sure you select the XP and not the XP 64 bit. You can then type in your service tag.
Obviously if you cannot connect you will have to go in on the other computer follow the above and select your network driver download and install on this computer.
Deal with just the network first, we can sort the others out later.
Then ASAP get the anti-virus.
NB Re above you have the drivers disc I think, that will do for the time being and then we can go Dell later and get the updated ones.
Edited by Macboatmaster, 17 December 2010 - 10:40 AM.