When it comes to Flip 3D of windows vista , which come into effect when you press window+tab key.But flip 3d speed of the effect become worst to see due to its slow speed due to missing video adapters on your system.
So to make Flip 3D perform much faster and smoother by disabling .
Follow the step by step procedure:
1. Start>>Run, type in regedit ,press Enter.
2. Go to HKEY_CURRENT_USER>>Software>>Microsoft>>Windows>>DWM.
3. Create a new DWORD value and name it speedup3DWindows.
4. Set any value between 3-9 according to your video card canfiguration.
5. Reboot to see the change.
If you have any problems in windows vista performance leave a comment here i will be glad to answer your query.