Corrupt graphics in Nebula KOF98

[godfist]

I have a Pentium 3 500 mhz 384 MB RAM, ATI Rage graphics card (I doubt the sound card matters, the sound works fine). Because my computer is so slow I have to run Nebula games in a small window, but King of Fighters 98 runs fine in it...well other than these darn corrupt graphics like the health bars and super bars or whatever is in the bottom left/right corners. Why are the graphics corrupt? Could it be my crappy video card (it has corrupted graphics in GLBoom before...) or is there some setting in Nebula that I need to adjust?

Edit:Oh yes, I'm using Nebula version 2.25

 

[spartan]

if your computer is that old then yes it is probably ur graphics card or drivers.

 

[Agozer]

If only the health bars and super bars are corrupt and nothing else, then the romset itself is corrupt, and it has nothing to do with the specs of your system.