Wireless conflict between computers

[Vahine]

I've recently set up a home wireless network.  All computers do not have built in wireless capability so I'm using PCI adapters.  All computers are working except one in this regard:  When I enable wireless, I get connectivity but it shuts down connectivity to one specific computer which is in another room.  Vice/Versa  This does not occur with any other computers.  Since disabling the problem computer's wireless, all computers are working just fine.  I've tried different types of adapters; Linksys USB type and Netgear PCI.  Same problem.  Has anyone else out there encountered this issue?

[GX1_Man]

 When I enable wireless, I get connectivity but it shuts down connectivity to one specific computer which is in another room.  Vice/Versa  This does not occur with any other computers.

Could you elaborate on what you mean by this? Does the problem computer share a name with any of the others? They must all be unique.