want to convert your nokia 3650 .3gp files to raw avi files ?

yes.. believe it or not.. it's possible!

here's a guide:
--> http://www.allaboutsymbian.com/phpBB2/viewtopic.php?t=12577&start=0&postdays=0&postorder=asc&highlight=converter

and the tools you need:

3gp to avi converter core with GUI
--> http://129.44.162.100/bmd/getfile?name=3gp-2-avi
virtual dub for avi raw to avi real conversion
--> http://prdownloads.sourceforge.net/virtualdub/VirtualDub-1.5.4.zip?download