LOL but srsly brah
in recent times, due mostly to steve jobs WONDERFUL yet TERRIBLE decision to move mac over to intel processor's, macs have been able to easily and efficiently run windows using bootcamp or parallels. and, like many things, if it goes one way, it can go the other way too. (insert bi joke here) such is true with windows, as it is possible to run leopard(it seriously took me forever to remember how to spell this), though it is impractical, very difficult (apparently) and has a high likely hood of crashing. so basically you could, if you REALLY wanted to, and were really good at computer stuff, run imovie on a PC. im sure there's other ways too, but basically for you its impossible.
sparks: give up. you= using moviemaker