Jet...
Try this little freeware program
Total Video Converter
It supports the following video file types :
Rmvb(.rm,.rmvb)
MPEG4(.mp4)
3gp(.3gp, 3g2)
Game Psp(.psp)
MPEG1(.mpg, mpeg)
MPEG2 PS (.mpg, mpeg, vob)
MPEG2 TS (DVB Transport Stream)
Ms ASF(.asf, .wmv)
Ms AVI(.avi)
Macromedia Flash video FLV (.flv)
Real Video (rm)
Apple Quicktime(.mov) FLIC format(.fli, .flc)
Gif Animation(.gif)
DV (.dv)
Dx9 Directshow - can open
... and will convert them to pretty much anything you might need
Coconutty