HELP for FS 2002 : grey aircraft texture

Hello everybody !I have a huge problem with FS 2002 pro : on flight creation menu, bundled aircrafts (Cessnas, boeings, corsair, ...)appear with grey textures. Third-party aircrafts render correctly as do FS 2000-imported ones (Learjet,...).When in flight, cockpit is OK but scenery renders partially black and airplane renders entirely black (except for third-party and FS2000 ones).All this comes after a DirectX 9.0c and Nvidia drivers (77.72) update.I tried uninstall and re-install FS but still does not work.I run a PIII 733 256 Mb RAM and a GeForce 256 32 Mo under win98 SE. (a bit old but FS 2002 has worked fine for 2 years)While reading forums about FS, I noticed several messages reporting issues with Nvidia drivers but none gives a good solution for me.Does anybody have tips on how to resolve this problem ?ThanksRegardsAlban