I am new to the forums but I have converted movie files to my nokia n95. With version 18.104.22.168. I have xp pro. I looked up on your phone it plays the following formats.
QCP,WAV,3GP,MP4, MP3, MID formats for sounds ringers the "Animated Ringtone" feature
I have sponge bob and hotel for dogs on a mini sd hc 8 gig card for the kids. They work great. I just convert and save to my sd desktop. I use an sd adabptor that my mini sd plugs into, then into the usb. I just copy and paste, done. I had issues trying to save converted file directly to my phone.
Hope this helps.
Be careful that your phone can handle 2gig sd cards, or hc mini sd's.