Overview: I have connected a new wifi laptop and a new linksys router to my previously working network. Now I have 2 vista computers (one laptop wifi), and 2 xp computers and one printer on the network. Currently, they all connect to the internet (after lots and lots of stressful hours). But, for the most part, they do not see or talk to one another.
I say for the most part because each computer sees a different number of others on the network, and each can access different shared files.
I can give you exact specifics of which does what, just tell me what you need to know.