A computer from 2000 would have trouble with opening the photos in a best of vacation album from a low bend camera for editing (8 megapixels is 22 mb/image).
In 1998, I ran a self built Cyrix 6x86MX PR200 based machine with a mind bending 48MB of RAM. With Win95b installed, I worked on extremely large (for the time) game backgrounds for a small startup company. I had no problems opening up files approaching or greatly exceeding the 8MP size of today's cameras. There was a lot of paging and whatnot, but it was still workable under Photoshop 4.0.
I have in service right now a Dell Optiplex GX200 w/933MHz P3 w/1GB PC800 RDRAM (built in 2000) Running Windows 7-32bit. It handles 9MP pictures nicely. thank you very much.