DVR connection to D-VCR

I believe the Mitsubishi will only accept 1080i digital connections from camcorders and specific digital tuners (Mitsubishi and maybe some others) via firewire. Depending on the vintage of the JVC you may be able to use firewire, YBR and/or component inputs from an appropriate digital tuner or camcorder. From what I understand, Pay For Channels such as HBO, etc. may not work. There have been some computer based interfaces avialable, but, they are a bit esoteric and are reputed to be a bit "buggy". The last time I checked, which was sometime ago, there was only a couple of DVR's that permitted this output, was not available from Direct TV, is no longer in production and are actively sought out by others for the same reasons you've outlined. Many end up downgrading to analogue to archive. I could be wrong, but, some of the firewire connections may be limited to video.

Thanks Unsound.
The Mit is the HS-HD2000U and the JVC is the HM DH30000U.
The Mitsubishi takes firewire in and the JVC only has a coaxial cable in, while the Sony 250 Gig DVR only has component out. Is there some kind of converter/adaptor/switcher that takes multiple inputs (coaxial cable, component, firewire, USB, HDMI) and has mutiple outputs (coaxial cable, component, firewire, USB, HDMI) "A multi-language/protocol interconverter"? I have the Denon 4306 AVR--but it does not allow for that kind of relationship...

I am curious about this also. I have a HD Dishnetwork DVR (Model 9??) and I would like to transfer some of the stored HD programming to another medium (preferably DVD). How can I do this ? do I need a HD VCR or Blu Ray writer. What is my best option ?. I noticed there is a USB port on the front of the reciever. Can this be used to transfer the HD programs from the hard drive of my receiver to the hard drive of my PC/Notebook ? Any other options ?

Thanks

To the best of my knowledge both the Mitsubishi HS-HD2000U and the JVC HM DH3000U can only recieve 1080i digital HD via IEEE 1394 fire wire. The Mitsubishi HS-HD2000U can only send via IEEE 1394 fire wire. The JVC DH3000U is equiped with an MPEG encoder/decoder which can upconvert analog signals to digital to record in the digital domain and output via HD analog component output. I'm guessing the JVC's MPEG decoder is MPEG2 and I don't know how it will interface with some of the newer MPEG 4 systems. I believe some of the newer JVC machines may be more flexible, but, I'm not sure. Unless one gets into some esoteric computer based equipment, I believe the only way to record in pure digital HD with either of these machines is via IEEE 1394 fire wire. This IEEE 1394 fire wire is only capable of connecting with specific applications.
If the HD Dishnetwork has an appropriate IEEE 1394 fire wire outlet, your probably in luck, if not, your probably out of luck.
I suspect the powers that be, arranged this mess to protect their "intellectual property". You know, reality shows and the like.