Try getting NVMax or Rivatuner, you aren't going to be able to get much more performance out of that card though
What system you got, and do you have any money? An upgrade to a GF2 would probably do wonders for you........
EDIT1: Just noticed your specs are in your sig, so why you got a GF 4 card listed there if you are using a TNT2????
EDIT2: Just noticed this in another thread you posted:
heres my specs:
AMD anthlon 950 MHz processer
386 MB RAM (somewhere around there)
direct x 8.1
windows 98
PNY Verto GeForce4 Ti 4200 64MB DDR AGP Graphics Card
So yet another different system?