ur
DirectDraw Acceleration is probably disabled
my suggestion
Start->Run
type in
dxdiag
in d window dat opens select d
display tab
in der u will find a section called
DirectX Feature
there u can enable d disabled features
and since u r @ it, might as well re-install DX using d latest redistributable and latest Grafix drivers
PS: Assumed dat ur grafix card supports
DirectDraw Acceleration