You won't find any good fighting games for PC.
The only decent one was MK4
and this games have their limits.
That's for 3D fighting.
2D, go for guilty gear.
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A True Hero isn't measured by the size of his strength, but by the strength of his heart!!!
There is no save game in real Life!!!
My PC Specs:
-Intel Pentium4 2.8 Ghz(Not H.T), BUS 533 1 Mb L2 Cache
-2x256 Mhz DDRAM V-Data BUS 400 + 1x512 Mhz Kingston. (Overall 1Ghz RAMs.)
-MSI V-Class P865 Neo-II Mobo 400/533/800
-Xfx Nvidia GeForce 6600 GT 
-Asus DVD Burner 16x
Dispair Imbodied: Son of Sparda; You must repent your sins.
Dante: Don't speak. Just Die...
*sig image too big, limit is 500x130px and 25kb*