The same way you cannot use the screen on the laptop to connect to a tower... it is not OS dependant.
I am thinking of taking a jump to Mac. But not a big jump. Also, I have a limited budget. Soooo, I was wondering if it is possible to connect a Mac Mini to my PC laptop so that I can use the laptops screen and keyboard.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic