so im stuck with this gf2 mx400 pos

.....so i figured if its gonna be around a while i might as well make it better

...i just d/l'ed rivatuner and overclocked core and memory by about 7mhz each(i know not much)....but i dont really care for gaming performance(i only play cs and mm1), im more into making videos and such and need quality...so does anyone know what to change in rivatuner or what drivers to download that can get me a lil better vid quality?....thanks for any help
p.s. this is on a p3 1gig running xp, 512mb sdr