How can I make my computer go to sleep after 2 minutes?

Hmm ok ickymay thanks for the idea it will probably be the permanent solution because I don't see anyone coming with other solutions but now I have to be prepared for my stuff to be messed up with... if I remove my password.

not to offend you but what your trying to do sounds stupid. why 2 minutes? why so soon. if u know u are gonna be away from the pc why not just manually set it to go to sleep.

Ok... I'll try to explain. I also run OS X on my PC and my sister has all her stuff in OS X and that's fine, she just reboots into OS X when she needs anything and then I go to windows most of the time. The problem is when the computer is shut down from OS X wake on lan doesn't work. Wake on lan works perfectly and it's 100% reliable when my computer was shut down from windows or put to sleep from windows. So I was thinking when my sister stops using the computer, instead of having her always have to wait until the computer boots into windows and putting it to sleep I would just tell her to never shut down the computer, instead just restart it (goes to windows if you don't touch it) and then have the computer go to sleep by itself shortly so it is always available for me to use with wake on lan when I'm not home.

But I'll probably just have her switch completely to windows and take out OS X out of the equation and solve the problem like this.