NEED help!!! ALiENWARE AREA-51 ABiT AA8XE P4

NEED help!!!
i have an alienware area-51 abit P4 motherboard cooler master and 120mm fan 460 watt PSU PNY 1024mb video card also have a sound card havent really had time just waitn for an adapter the video card any suggestions what mods to do? whats the highest stable memory frequency 667 800 1066 that will work keep in mind my budget is real tight

ANY IDEAs anyone?

Why do you want to increase your memory speed and we need more information on your system.

Use CPU-Z and take a screen shots, if you cant get more information.