Hi gunju221,

If you don't use Acceleration for FSX, make sure that you have installed both FS Service Pack SP1 and SP2. They are essential and indispensable part of the minimum requirements to be able to use CS planes properly.

You must install SP1 before installing SP2, so download both and install them.

SP1 - http://www.microsoft.com/download/en/details.aspx?id=14380

SP2 - http://www.microsoft.com/download/en/details.aspx?id=8986

Further reading - Patches and expansions - http://en.wikipedia.org/wiki/Microsoft_Flight_Simulator_X

Hope this helps,

Pinatubo.

Edit: Previous downloads links were corrupted. Changed and now working.