A wireless internet connection should not have anything to do with the other PC unless ICS is set up or you're trying to use some Ad Hoc connection. Both should be able to go right to the AP without even knowing the other exists. How do you have all of this set up?
I need to access the internet from a Laptop using Windows7 via a TP-Link modem/Router on a Desktop using WindowsXP. Can do if no security! With security set to WPA-P2k on XP, Laptop cannot find the Access point (i.e. TP Link Router). Both PCs have same Workgroup and the network setup has been transferred from the XP to the Laptop. WindowsXP works fine - why not the Laptop?