Recording from Direct TV PLUS HD DVR



We recently purchased a new Direct TV plus HD DVR and we
are unable to record to our TOSHIBA DVD RW? We purchased
this DVR to do the online on demand from Direct TV.

The old Direct TV DVR PLUS (non HD) would allow us to record
to the TOSHIBA DVD RW, no problems.

Can anybody tell us WHAT are problem is and how to get around it?