Debugging a COM application.

HI,

In Visual Studio 6 when we step into(F11) a call to a function of out of
proc server it pops
up a new studio window and allows debugging of the server in that window.

The problem with my visual studio is that it suddenly (might be i have done
some changes in registry unknowingly) stopped popping up the window and it
silently
runs the server and doesnt debug the server process.

Can anyone tell me how do i revert back to the original studio
configuration.
And one more thing…is this same possible with WinDbg.

thanx,
Manish