Even with Android 2.3, which supports multiple cameras, software written for Android 2.2 would still not be able to access the front camera. The reason is the old interface is hardcoded to search for the rear camera. I've posted more details at this thread:
Hopefully someone can make that simple change and recompile it. It would allow all video chat apps to work with the front camera, not just mine. As for Android 2.2, each device provides a specific API to access the front camera, so one would need to change the open() method to invoke that specific API, and of course, recompile.
Looks like this multiple cam access feature has been requested since 2008 (link), if not earlier, and now we finally see it in 2011.