Hello all. I need advice as to what I should do with my desktop. I'm not a complete novice but I'm no expert either.

This is what I've got:
A tower-based desktop that is over six years old that was originally bought as a gaming computer
Windows XP Home Edition
Pentium 4 CPU 1.80GHz
512MB of RAM

I don't really need it to do anything more robust than surf the internet, do some Photoshopping and run iTunes. It's been fine all these years but I think the newer versions of iTunes (version 8), firewalls and security software are more than it can handle with ease. It's running noticeably slower than in the past and it's starting to get pretty frustrating. It also freezes for several seconds EVERY TIME iTunes moves onto a new song.

Is there hope for it? Would it be possible to just add RAM or upgrade something without having to just junk it and get a new machine? I really don't want to have to deal with upgrading software and/or Vista or Windows 7.

Thanks for your time.