I bought my copy of Dragon age: origins at walmart just yesterday and its all installed. but when i run the game it has the physxloader.dll was not found, reinstalling this program may fix the problem. So i reinstalled. same thing happened. i checked the disk to make sure it even had a physx file, which it does, in the software folder is physx_9.09.0408_systemsoftware.exe. so i see if i can just run it by itself, whenever i do that it says invalid command line argument. and then doesn't work with and without the administrative priviliages. i've tried to do the /quiet and all that good stuff on the shortcuts i've made but that ends up no good as well.
Long story short, i can't play the game becuase i can't get that one file

.
Any and all help/comments are greatly appreciated.
SPEC
AMD Athlon 64 X2 Dual Core Processor 3800+
NVIDIA GeForce 8600 GT
Driver version: 191.07
Ram: 4.0 gb
sound adapter: Speakers (Realtek High Definition Audio)
driver version: 6.0.1.5555
Microsoft® Windows Vista™ Home Basic Service Pack 2 (6.0.6002)
DirectX 10.0 (Mar2009) or later