So, after searching far and wide, I have not found a solution to ongoing issues with playing 1080p VC-1 backups of my HD-DVDs, so I am asking the experts.
My system is:
Athlon 64 3200+, 2GB RAM, Geforce 8800GT 512MB, Windows 7 RC 1
Xbox 360 HD DVD Drive for ripping

I have MPC-HC and it has worked flawlessly on my old MKV files (h.264) and the new rip I pulled down of Transformers (also h.264). DXVA kicks in as expected and playback is smooth and crystal clear.
I then ripped The Rundown, The Chronicles of Riddick, and Batman Begins from HD-DVD and all of the are encoded in VC-1 on disk. Using Clown_BD to rip down to a TS file, depending on the movie I am either converting audio to AC3 at 640 or DTS. I have not downloaded any crazy codec packs and have followed the guide created by dbone. Still, I find that all of my VC-1 rips do not utilize DXVA in playback and therefore unwatchable.

Looking for suggestions, objective as I back up my HD-DVDs is to have simple setup and then walk away. Don't want 10-12 steps to rip/encode.
HELP!!! What is my best option?

So, after searching far and wide, I have not found a solution to ongoing issues with playing 1080p VC-1 backups of my HD-DVDs, so I am asking the experts.
My system is:
Athlon 64 3200+, 2GB RAM, Geforce 8800GT 512MB, Windows 7 RC 1
Xbox 360 HD DVD Drive for ripping

I have MPC-HC and it has worked flawlessly on my old MKV files (h.264) and the new rip I pulled down of Transformers (also h.264). DXVA kicks in as expected and playback is smooth and crystal clear.
I then ripped The Rundown, The Chronicles of Riddick, and Batman Begins from HD-DVD and all of the are encoded in VC-1 on disk. Using Clown_BD to rip down to a TS file, depending on the movie I am either converting audio to AC3 at 640 or DTS. I have not downloaded any crazy codec packs and have followed the guide created by dbone. Still, I find that all of my VC-1 rips do not utilize DXVA in playback and therefore unwatchable.

Looking for suggestions, objective as I back up my HD-DVDs is to have simple setup and then walk away. Don't want 10-12 steps to rip/encode.
HELP!!! What is my best option?

Did you confirm with GraphStudio that MPCVideo Dec has been assigned to VC-1. My desktop pc (Q6600 and dual SLI 8800GT) and HTPCs (4850e and AMD 4670 GPU) are running W7 RTM (x32). I have confirmed with several VC-1 rips (ts and mkv) that DXVA kicked in (just looking at the CPU utilization). I never tested on W7 RC1, only the RTM version.

I should mention as well, not quite sure what went wrong but when I tried setting up the codecs on my W7 htps even though the FilterTweaker app told me VC-1 had been assigned to MPCVideoDec, using Graphstudio kept telling me the default Windows filter was still being used. No clue what happened, I just ended up doing a clean reinstall and everything worked out perfect

Did you confirm with GraphStudio that MPCVideo Dec has been assigned to VC-1.

I downloaded the x64 version of Graphstudio (running x64 MPC-HC on Win 7 RTM x64 now) and I keep getting an error message "cannot render file". Searched for help on this, but not finding anything...

I downloaded the x64 version of Graphstudio (running x64 MPC-HC on Win 7 RTM x64 now) and I keep getting an error message "cannot render file". Searched for help on this, but not finding anything...

Something doesn't sound corrent if you are getting that error. It almost sounds like there might be some bad or missing filters?

Also, there is another thread that was started regarding VC-1 issues here:

http://www.avsforum.com/avs-vb/showthread.php?t=1176557