How can i test a cpp application (which has hooking in it)with purify?

I tried to test an application developed with cpp &platform SDK ,which has used SetWindowsHookEx in it. While running the same through purify , the program stopped responding ,with a message in data bowser of purify saying
Message: SetWindowsHookEx(0x0) may not function as expected when you run your program with Purify. The call has been denied.
Use the option -allow_setwindowshook to permit this call."

How can i go about successfully testing the same ?

Please help,

Thanks in advance

[ 05-25-2005, 11:32 PM: Message edited by: Areekkal ]