DirectX 9.0c/10 Video Memory Reporting Errors...?

Ok...here's the Thing...I am not Technologically Impaired...so please...if you are going to waste my time Don't Bother.

My Rig....

AMD Phenom II 940 3.0 Stock / Overclocked to 3.6Ghz

8GB DDR2 1066 RAM

GA-MA790GP-DS4H Motherboard BIOS Rev F3

Dual Sapphire Radeon HD 4670 1GB In CrossfireX (8x/8x mode)

Windows XP x64/Windows 7 Ultimate 64Bit

With my 2 Operating systems I have 2 Different issues...Both Dealing with DirectX (Sigh)

In Windows XP x64 I have a Modded 9.0c to allow DirectX 10 Support. That is working just fine. When I go into the Display properties is where i have a problem. For Some reason the section for "Approx. Total Memory" for the Display is only reading 1GB (1024.0MB) Which would be accurate if Crossfire was not Enabled. I have the March 2009 Version of 9.0c, and the Latest Drivers from AMD/ATI (4-7-2009 release)...I downloaded both this morning. Still incorrect readings. This is causing a problem in GTA IV (not that it is unplayable..i just can't max out the view distance) as it shows that i have 1GB of Video ram when i know Darn Well that I have 2GB.

I am sure there is a file i can edit somewhere in the DirectX files that will allow me to set another maximum for DirectX 9.0c..which i am thinking is the problem. Has anyone found it?

After i tried that...i decided to see what Windows 7 would report. Figuring i would see 2048MB of Video ram because of the Newer Version of DirectX which should support more. I was right...but it was still wrong. Instead of showing that I have 2GB of Video Ram it shows 3.5GB... I have no Shared Memory as i have the Onboard Video Disabled in BIOS. I want to know where this come from...1.5 GB is just coming out of nowhere....Anybody know why?!