>I need to be able to interactively set the thread priority of a FoxPro exe. Looking at the SetThreadPriority api call, I notice that I need a Thread handle. How do I get a thread handle of an already running process. Or if I call the exe with CreateProcess is the thread handle available to me there?
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GetCurrentThread() returns a thread handle. CreateProcess() returns a thread handle to the first thread started in the Process it creates (as well as Process handle, process id and thread id) in the returned PROCESS_INFO structure. API_APPRUN parses this to get the process handle and thread handle in the ParseProcessInfoStruc method.

Unless you understand the implications of altering thread and process priorities, I'd advise against changing them; the results can be far from optimal.