Help VB Mouse click problem.

Alright.. I am using VB6.0.. Ive been making poker related programs for awhile now, trying to make one for betandwin.com.. I like to make programs that watch tables and record the hands so when I play I have a big database of information about the other players. Anyways betandwin's poker client only has 1 handle (the mainwindow), so I tried to send mouse clicks to coordinates to click on the buttons to automate the hand history recording.. anyways, betandwin seems to block the simulated mouse clicks somehow.. I tried numerous different mouse click code, and they all work on EVERY other application but this one.. If someone could figure this out, I'd be SOOO greatful!.. Thank!