Mine is more pro!
Manufacturer:
Me! (or well, to be more correct, my german neighbour

)
Processor:
Intel Core i7 920
Memory:
6 GB DDR3 1333 MHz (worth overclocking four Mhz? xD)
Harddrive:
620 GB+250GB
Video Card:
GeForce 9800GTX+ <- To be replaced if BF:BC2 and DX11 meets expectations, otherwise awesome
Monitor:
Samsung SyncMaster 931BW 19"<- May or may not be replaced, depending on whether I'll keep being satisfied with my dear 1440x900 res on most games
Speaker/Headphones:
Logitech 2.1 system (can't remember the exact model)/Steel Series 4H
Keyboard:
Saitek Eclipse <- Awesome keyboard, but it's taken it's toll, may or may not be replaced with my spare wireless Logitech keyboard.
Mouse:
Microsoft Intellimouse Explorer 3.0
Mouse Surface:
SteelSeries Qck+
Operating System:
Windows Vista Ultimate 64-bit <- Might replace this with Windows 7, depends on what DX11 brings to the table
Motherboard:
Asus P6T Deluxe
Computer Case:
Cooler Master CM620 (also a good home for rodents and insects trying to keep warm! lol)
Too bad the user of this rig ain't that pro...
Enough with the e-penis comparisons though and back on topic:
Yeah, I think that card is a good upgrade. Personally I'd wait for nVidias DX11 cards this spring, but I'm kind of a fanboy so I guess the 5770 should be good for you