alright its not a surprise other people use my computer and i want to know what they are doing on it when im not here. there happy can you please help me
Even if I could, I would not, as it is spying, and while I had those urges too when I was younger, it was not helping me.
If other people use your computer, and one reason you want to know what they are doing there is if they spy on you, create several accounts for those people, thus they do not need your account and you can be safe from worrying being spied upon and they can be safe from worrying being spied upon too.
I know, asking the people using your computer is hard, but if you really want to know, do it the hard way, otherwise you have no right (despite legal reasons, ah, another reason we cannot help you here according to the rules, which sadly have to exist, as morality and ethicality is often disregarded) to know, what they are doing in their own time, unless they are spying upon you, and even then, using the same methods will not make you any better or feel better.
But then again, this is not a parenting forum, thus do what you think you have to, but do not expect help here regarding spying on others. Just use Facebook or ask that friendly agency for "national security".