network problems

i have 3 desktop computers and a laptop. i was using a d link wired router….and tried to connect a netgear wireless router……no luck….so i got another netgear wireless…..i connected the first wireless to the dsl modem….and connected the 2 of the wired computers to this one…..ran cable to the 2nd wireless, connecting the 3rd wired computer directly to this one. the wireless internet is working fine…but computer #3 is not finding the network. It will find the internet…but not the other computers…..any ideas????? (all computers running win xp)