Question regarding Crysis, Dx10 & output to a TV.

Hey-

I hooked up my rig lto my living room tv last weekend to play some crysis and I encountered a problem.

First off- My specs:

Maximus formula s/e
e6320 @ 2.9 ghz
2 gigs ddr2 @ 830mhz (1:1)
sapphire hd 3870 @ stock, w/ cat 7.11 drivers. (i know there is a hotfix but I could not tell the diff)
600w ps

Tv is a 2002 panasonic 47 in crt projection hdtv, 480i, 480p, 1080i.

(for those interested I get about 35-45 fps depending on the action in the game @ 1024X768, with everything on Med except sound and shaders on High with 2X AA.)

Back to the Quesiton, I have my computer hooked up through an ATI dongle on the DVI port on the back that has output to component cables, then those cables go to the tv, sound is out through the optical in the reciever.

Now, when I start the game in dx9 mode (in vista 64 right click the game icon to select dx9 of dx10) everything works like a charm, I can change settings, (800X600, 1024X768, high med low, etc.) but when I run the game in Dx10 mode everything is crammed in the top left corner of the screen (split the tv in 4 quadrants and im looking at the top left quadrant.

When I uncheck the full screen box it goes into the game menu (with my desktop in the background of course) and when i go back to options and re check the full screen option everything looks normal again (with the screen returning to normal size, full picture in all four quadrants) but the mouse is out of sync (like whereever i put the mouse it is acutally looking 4-5 inches to the left, so when i select an option on the left, im moving my mouse down the right side of my screen-- AND on top of this I cannot change the resolution-- (its stuck on some garbled text with no drop down box.) I think its stcuk in 800X600 b/c when i play the game it looks like crap.

Any one have any expereince with this or offer any advice?