Thanks for your help.

I'm pretty sure my problem is with my 8800GTS not having HD Purevideo so there is no onboard hardware HD-DVD/Bluray decodcing going on. Thus, it's relying on my 3800+ X2 CPU which just is not up to snuff.
I overclocked my CPU last night to 2.3Ghz (standard is 2Ghz) and I can get the 5th element movie to work without stutter now but the CPU temperature is very high.

Options are to replace my video card which would be my third on this rig(had another nvidia but it had no HDCP and anydvd would not bypass the HDCP issue) so I will probably go with a new motherboard/CPU with the existing 8800GTS and use the existing stuff to make a server computer or something...

Thanks again to everyone.

LIP