I wold like to do some upgrades to my dell dimension 2400 so i could start playing games like need for speed shift and the star trek online. i no i will need a graphics card and and some ram but i have no clue what ones i will need, how much i will need . i no i got plenty of room on my computer i just got a 500gb hard drive. I not trying to spend to much more then $175. can i do it for that price and dose anyone have any recommendations. Thanks