Replying to Editing Programsss

yeah, umm... i'm pretty pissed cuz i have a dell computer that's fucking powerful and not even a year old yet so its definately up to date and i've got windows xp which blows ass but i have it so yeah. but its too bad that i have such a sick comp...yet when i import ski clips and shit on my computer with the shitty windows movie maker, they come out all blurry, and freeze about every 2 seconds. Why is this?? The comp has power, the camera is sick and also like, 3 months old, and everything comes out like crap. sooo, what do i do? my comp doesn't have firewire card and i'm using a usb with like, a reg. usb cord. Do i go out and spend 100 bucks on a really good usb cord? or do i buy a firewire? is it the program? probably not because the cam. came with a program that freezes the picture every 2 seconds too. i dont want adobe. just something simple that will come out clear and stuff. what do i do?