>Hi,
>
>How and where do I set in the debugger that the program is to stop when a certain alias/table is open?
>For example, when table SDTMETA or SDTUSER is open, how do I enter it?
>

I see downthread that you figured it out, but for someone who might read this thread later:

Put USED('YourTable') into the Watch window and set a breakpoint on that line.

More generally, you'll find lots of information about how to use the Debugger in my paper: http://tomorrowssolutionsllc.com/ConferenceSessions/Using%20the%20Visual%20FoxPro%20Debugger%20Effectively.pdf

Tamar