printing from up stairs

ok there is a main desktop that is down stairs which is mine, and ther are 2 other laptops in the house we all use wireless internet cards including myself except mine is a usb one but anyways if my sister ever wanted to print anything from her laptop to my printer how would I do it like step by step in description or site that u can take me to that will show me how.

I'll assume that you're on the same network, in which case, go to 'my network places' and just make your way from there.(Though that probably wasn't too much help.)

My Network Places > View Workgroup Computers > click on the computer you want to print to > Printer