If you think your PC is OK for you.
Try to get someone to install the Service Pack 3 onto your aging O.S. of Win. XP and, most of the Device Drivers onto it(Video/Graphics, Sound, Monitor, Keyboard + Mouse and, the Network Adapter-RJ-45 port). To see what kind of default messages you will get when the attempt to install the SP3(year 2008 one) package.
Good Luck computing from now on, buddy.