
Hi RobK,
It sounds as if your reinstalls have complicated matters, and it would probably be a good thing at this point to reformatt and start fresh.
You will need to back up your personal files before beginning this process, you can simply burn them to a CD, that is usually easiest unless you have a large media cache.
Once backed up, I suggest using the XP Install in my signature. It is a wonderful way to keep XP running smoothly on your PC.
Read through the main version to familiarize yourself, and then print out the printable version to have with you while you go through the process.
Let us know if you need any additional help
TTFN
LGW