What I do know:
Operating System
Windows Vista Home Premium (x64) Service Pack 2 (build 6002)
Install Language: English (United States)
System Locale: English (United States)
System Model
HP-Pavilion FQ569AA-ABA a6755y
System Serial Number: 3CR8500FNL
Chassis Serial Number: DM0001
Enclosure Type: Desktop
Processor
2.20 gigahertz AMD Phenom 9550 Quad-Core
128 kilobyte primary memory cache
2048 kilobyte secondary memory cache
2048 kilobyte tertiary memory cache
64-bit ready
Multi-core (4 total)
Not hyper-threaded
Main Circuit Board
Board: Aspen 1.0
Bus Clock: 200 megahertz
BIOS: Phoenix Technologies, LTD 5.13 05/07/2009
Drives
639.99 Gigabytes Usable Hard Drive Capacity
487.64 Gigabytes Hard Drive Free Space
Memory Modules
5880 Megabytes Usable Installed Memory
Bus Adapters
AMD AHCI Compatible RAID Controller
AMD RAID Console
Microsoft iSCSI Initiator
Standard Enhanced PCI to USB Host Controller (2x)
Standard OpenHCD USB Host Controller (5x)
Display
ATI Radeon HD 3200 Graphics [Display adapter]
Westinghouse L1920NW [Monitor] (19.8"vis, s/n 5860K84700108, November 2008)
...So what are my choices within a reasonable price range? Unfortunately I can't get the most awesome card ever but something that'll let me play it without having to take shadowing off, and where the screen doesn't move like a picture slideshow...fast fps, etc. Please and thank you's and all that jazz.