Im using the ddutil functions when creating surfaces with directX 7. I havent been able to find these functions other places than in the samples of the directx SDK. Are these functions included in standard directX Library(Which lib?).. or do i have to include the header file from the samples ?

DDutils is simple a set of helper functions that were done up by the makers of dx, its not really part of the sdk, (so they say). But it can usually be found in the misc directory where the sdk was installed. You do need to include the header file if you are going to use these functions.