network win2k and vista?

how? I did it no problem win98-win98se, and win98se-win2k but some reason I cant get it to work between my win2k pc and my girls vista laptop. and i wanna do it wirelessly. also I have an hp photo pronter on mine, got it before vista. I can download an updat for it to run with vista, so do I download that driver for vista onto my pc so her computer can communicate with my printer

Are both computers on the same workgroup? Have you authenticated (user/pass) from the Vista computer to an account on the Win2k computer?