I have added a second wireless access point to the network. Both wireless access points are attached to a vpn router. There is a share on the vista machine that is connected to one access point. An xp machine attached to the new access point can not log on to the Public_Share. It can log on to a share on an XP machine that is also on the first access point. Another machine on the new access point can access the Public_Share.
The XP machine can see the vista computer in the workgroup but can not access it.
The vista machine is on the access point 10.0.1.250. The XP machine is on the access point 10.0.1.200 both are using the gateway of 10.0.0.1.