How to handle regular expressions? How to handle a window whose index is changing regularly?

Hi,

I would like know how do we handle regular expressions in TestComplete.

I am using Test complete for one of the Windows based  Java application autiomation.

There is a particular window whose index changes everytime it is opened. So this has to be handled using regular expressions.

I tried using regular expressions characters like*,.*,/d and so on, but still it was not working.

Can you please guide me to resolve this issue.

Thanks,

Aman.