having trouble with label click and mousedown events with pocket PC

I recently programmed a tic-tac-toe game for the Pocket PC using Visual Basic .NET. For each square on the tic-tac-toe board, I have placed a label. I have made Label_Click and Label_MouseDown events for each of the labels.

When I build the program, I can run the program without any problems in Windows. However, when I run it on a Pocket PC or the Pocket PC emulator, the program does not respond to the click or mousedown evens with the labels. Is there any way to fix this? In the future I plan to replace the labels with pictures, would this solve the problem? Also, is there an event I can add to my code so it will respond to a click not just on a label or a form, but anywhere on the screen?

I would appreciate any help at all on this.

Thanks,

Sesami