in windows movie maker (for example) the advanced option menu has the choice for NTSC or PAL formats for both capturing and saving video.

the other choice you may need to make is aspect ratio option...either
4:3 or 16:9 these options are in the "Tools" menu under video properties.

help topics and conversion info can be found here:
http://www.microsoft.com/windowsxp/using/moviemaker/default.mspx