To my knowledge, not with Win2k, but you can with WinXP. With Win2k, you
need a 3rd party screen saver prog that allows you to choose a directory
from which to pull pics.
I cannot remember the name of one I used before, but a search on the 'net
for SCREENSAVER will bring you MANY results to choose from. Also you can
check cnet.com, lots free stuff there.