Looks like Amazon has a SAPPHIRE Radeon HD 5450 for $15 after rebate (exp 7/31) as well as free Super Saver Shipping... better get it quick before they raised the price back up again.
Prehaps this link should help: 3D Vision Surround Technology System Requirements
Scroll a bit down on this page and click the tab "Connector Recommendation" for connection possibilities.
Here is some spec on their official website:
http://www.asus.com/products.aspx?l1=3&l2=179&l3=815&l4=0&model=2853&modelmenu=1
And some detail stuff on xfastest forum here:
http://www.xfastest.com/viewthread.php?tid=19208&extra=&page=1
My build is a Mini P180, much like cornelious0_0...
I trimmed the 200mm fan on the top in order to give me a few more mm of clearance for my DVD drive to fit up there.
Hoyle Casino is pretty good... I have the older edition and it was fun.
EDIT: Out of curiosity, I rummage through my old game box and found my copy of Hoyle Casino 2003. I'm pretty sure they have added more games and features since then... but overall it was fun.
The DFI JR X58-T3H6 is the only I7 matx motherboard currently out.
The Asus Rampage II Gene will be out soon, but I'll doubt it will be "budget-priced".
I just got finished with the build using this particular motherboard... this is the first time I am using a DFI board. I have that same quirky issue with the memory being filled on the yellow slots resulting in "CF" error... however, the computer would boot fine when you filled the memory in...
Actually, there is an interesting article on PC Games Hardware that did a comparison between Ageia and Geforce card for dedicated Physx on Mirror's Edge. Here is the link...