You need a XP/Vista disc and a Mac computer for that, pal.. (Mac isnt permitted to leave a Apple computer..)
iMovie is a part of iLife which is for Mac, and Hypercam is Windows software.
For Windows i recommend using Windows Movie Maker, it seems bad but is actually the best you can get for free. (Without CinePaint, which is a frame editor i will get it when a windows-version is available

But its more for experienced graphic artists which make nice out of small tools)
And for Mac you should use iMovie, the only movie editor i know for Mac.. (without Final Cut Pro)
To have a Mac with another OS on is BootCamp, which is Dual-Booting.
Dual-Booting is difficult on a Windows because Windows is made for single-boot.
But for a Mac its easier because its designed to do it.