Ria,
This is the best online site I've seen for using Win32 in VFP:
http://www.news2news.com/vfp/
Other than that, the Microsoft Knowledge Base is where I got a lot of the information for using constants. Just do a search on the specific constant you need. Usually, these constants are defined in .h header files used in C++. If you have VS 6 or VS.NET, you could probably find the appropriate .h file with most of the constants (windows.h, I think). There may also be some good info in the downloads section here...
>Claude,
>Please could you give me some more information.
>Where can I find more information on the hexdecimal equivalent for each of the constants like Normal_Priority_Class is 32,HIGH_PRIORITY_CLASS 128 etc.
>
>Ria