Converting AVI to .3GP and Uploading videos to transflash

Okay - At the request of Styol, I'm posting how I got mine to work. (converting from AVI to 3GP)

You will need:
Latest CoDec pack for Windows XP
Xilisoft 3GP Video Converter 3 (3.10 is latest)
Target File for Conversion
A few minutes of time
A MicroSD TransFlash card
Some way of getting the converted video from your computer (C:\Temp is the default output folder for the .3gp files) to your MicroSD TransFlash card (MMS/BitPim{SLOWER} or Media Reader{FASTER})

Start off by making sure you have the latest set of CoDecs installed on your machine.

Launch Xilisoft 3GP Video Converter
Click the (+) Add button
Search your machine for the file you'd like to convert (In my case it was a 42m59s long Star Trek episode)
In the "Zoom" field, change the option to |Full (Keep aspect ratio)|
Click (~>) Encode
Wait.
Wait..
Wait...
(Grab a Snickers)
Wait...
Wait..
Wait.

DING!

Now time to put the completed file on your flash card.
Navigate Windows Explorer to C:\Temp
your file should look something like this: Star Trek TNG - 1x22 - Symbiosis.3gp
Now, if you have a media reader, just move the file to the ROOT of your MicroSD Flash Card (DO NOT PUT IT IN ANY FOLDERS!)
Pop the card in your phone, turn it on, go to Menu -> Get Pix & Flix -> My Flix. You should see the video there.

If you are using BitPim, I will have to assume that you know how to put files on your phone that way. My laptop came with a media reader built into the side, so I use that (It's MUCH Faster).

Click play, and grab some popcorn (make sure you don't touch the phone with buttery and salty fingers!)