My lag (My computer)

[killer_dog10]

Ok I have 512 mb of ram(downclocked to 133MHz from 200Mhz) and a 1050MHz processor (1600+Athlon A socket) also I tried to change the core muiltilier from 10.5 to 10 and bring up the ram to 166MHz to make a cpu-ram ratio to 6to1 but I found out today all the stuff is locked!! Not sure why but I used to play zone on my old laptop without lag and it had a 500Mhz intel with 512MB ddr(166MHz) and it ran on 1024 something but I can't even get this desktop up to 800*600 I would guess around 500 by 400 or smaller to run without lag.

Any ideals to help me out?? I'm looking into how to flash my bios to get more range with the timing and the best part is this mobo says it can run ram up to 166Mhz

Other then that I guess i'll have to buy a card any ideal what I should do?? If I do get a Video card I going to need a stronger PSU to safely handle it.

Any ideals would help alot

I do have a computer thats my gaming rig but I'm not allowed to connect it to the internet I'm such a noob