Is there a way to convert WMV's into MP4s?

I doubt just preachin' will work?!
;-)

Use M & M's?

Best and free way is online nut only if you have broadband:

http://zamzar.com/

can convert anything videos, documents, music, misc

Yep, press the brown button!!!

u can convert anything. all u have to do is to find a good converter online

just use Google and enter what you want to convert from what to what.
Ex:
convert WMV into MP4s
once you entered into a website and find free trail of the software (MP4 convert or convert WMV to MP4s format)...download it.then install and verify.

NOTE: it's just a trail version,so once you have a got what you want,write the free trail into a CD immediately,so that once trail version gets expired uninstall it and re-install it with the written CD.

Use Afree AVI FLV MPEG WMV to MP4 Converter

Afree AVI FLV MPEG WMV ASF MOV to MP4 Converter converts your videos quickly and easily into MPEG-4 that mp4 Player or Zune, iPhone player can play. It supports converting almost all popular video file to MP4, Zune and iPhone formats easily and fast with simple settings including AVI, WMV, MPEG, MP4, ASF, VOB, 3GP, iPhone, MOV, FLV to MP4, Zune and iPhone formats to make it easy to play the video files on your MP4, Zune and iPhone player anywhere.

There are many programs but the best I find is tune bite, u got to pay for it though but you can find a free patch at www.astalavista.ms

Media Coder, professional grade transcoding for free
http://mediacoder.sourceforge.net/

Format Factory, grandma friendly interface. Output quality is not as good as other programs like media coder.

http://www.formatoz.com/