NVIDIA 7600GS - AA and IVAP & Squawkbox 3

Hi all,I have bought a Leadtek 7600 GS PCI-E using driver forceware 91.47 on windows XP SP2.When I set the AA on the nvidia driver and uncheck AA on FS side i have problems with network software like IVAP (IVAO) and Squawkbox3.Upon loading of the interface of Network interface it "saves" in a kind the current content of the screen,so when the interface is displayed, the whole screen below it shows the same content as when the interface was loaded. That doesn't do that if i let on apllication controlled and checked AA on FS but the result is a lot worst..I had also this problem with the last version of foreceware, i have just upgrade to 91.47 to try to fix the problem.Thanks for any help :)