connecting a network on windows 2000

I am using the wirelsss MN-500 router to access the
internet on my older computer that runs win 2000 pro. I
have anewer computer upstairs that uses XP and is
connected to the internet via the small wireless box--I
beleivew its the 610.

Anyway--I have been unable to set up a network from
windows 2000 so that I can use the printer down here, etc.

Can somebody give me an easy step by step guide to get the
damn network setup on the windows 2000 computer. Rememer
the printer is connected to this older computer running
2000, and it is the problem.

HELP!!!!!!!!!!!!!!!!!!