Hello, I have been having significant trouble this.

Cpu AMD 630 athon II rev2
Ram 2gig 1,333Mhz DDR3
Mobo M4N98TD EVO nforce 980a
GPU ECS 450GTS 192 core @ 789mhz -  1024mb 3000mhz GDDR5

I am using GUIMiner v2011-07-01

I have been mining for 3 days now and have earned 0.02 BTC.
I am processing 35.x Mhash/s
Notice the . please, its not 350+, but 35 .x

I have been trying out some commands to try to boost production, to no avail.

WORKSIZE=128 AGGRESSION=12

I found a post about working command line things, but the reference I used does not display how to set long/muliti commands [so I assumed space without ,]