Browser problems

Perhaps this has something to do with my Pentium 3 laptop or the recently acquired Windows XP that I just installed on it. Once I've logged in to RHP and start playing, my browser dies.. Like completely. It just disapears as soon as I click the move button and I have to start all over again (open the browser and log in again) only to have the same thing happen to me. This happens with IE and Firefox and only on the RHP site.

I can log in and play no problem on Win '98 on my other 2 much lower spec desktop pc's....Does anyone have any advice.

have you recently checked for a virus on your computer?