OK, I don't feel so 'skanky' now. Here's my (daughter's (who is only nine)) PCs spec:
Celeron 333Mhz
192 MB SDRAM (more to be added)
4 gig HD + 1 gig HD
A crappy 4 Meg graphics card (soon to be updated)
15" (old) monitor
Some version of Sound Blaster
33k modem
Windows 98 SE
Internet Keyboard (USB)
I use software mode with all details on, with 640 x ???? what ever. Runs pretty fast.
I own an even worse PC (I do only use it for internet, music and chat, though) It 'just' about runs GP3 but I don't play it on this.
Pentium 200mhz (non MMX)
128 MB EDO RAM
3 gig HD + 10 gig HD
8 Meg ATI Rage Pro
A Sound Blaster comp Sound card
A decent 15" monitor
56k V92 modem
Windows 98 SE
Old keyboard (Windows 95 style)
I will buy me a better PC one day. Then I'll be able to play GP4 on it.