CAN YOU TRANSFER VIDEO FILES FROM LAPTOP TO IPHONE 3GS?

I'M USING BOLD WRITING BECAUSE NOBODY ANSWERS MY QUESTIONS EVER.

I don't know but ill start the answers rolling. Gl

Convert the video to mp4 (google a converter)… Open itunes click your iphone and then films drag the video (.mp4 format) into there and your done.

First you need to convert them to itunes compatible format. Then you need to upload them to phone using itunes.

Convert:
http://www.ioncannon.net/meta/1040/how-to-create-ipad-formatted-videos-using-handbrake-or-ffmpeg/
or
http://thomer.com/howtos/ipod_video.html

Syncios iPhone Transfer may help you.
http://www.syncios.com/