First of all please post your computer specs....
1. what operating system are you using? I assume it's windows but is it XP, Vista or something else?
2. What kind of computer do you have?
a. laptop or desktop and model of computer if you know it.
b. how much ram does your computer have?
c. maybe other information like motherboard type, processor type or graphics card type -- whatever is relevant to your question or problem.