I am having trouble programming my Sony rm-av2100 to control my Home theatre System model STR-K670P (which is the receiver part of Sony HT-DDW670) and Sony Surround System DAV-FX500.

Unfortunately, I do not have either of the original remotes.

Can anyone help me out? Is the Sony RM-AV2100 remote even compatible with either or both?  If it is, or if there is a way to have them work, please help me.

Thanks!

Bev