MySQL (version 4 or higher)
PHP (version 4.x)
Fmpeg (http://ffmpeg.mplayerhq.hu)
FFmpeg-PHP (http://ffmpeg-php.sourceforge.net)
Mplayer + Mencoder (http://www.mplayerhq.hu/design7/dload.html)
flvtool2 (http://inlet-media.de/flvtool2)
Libogg + Libvorbis (http://www.xiph.org/downloads)
LAME MP3 Encoder (http://lame.sourceforge.net)
Zend Optimizer

Check with your host all these requirements are installed on the server.

Also have you paid to remove the vshare part at the bottom? If not its a breach of terms and i cant help you further.