Please help me!

I'm trying to watch an avi on my TV, using BsPlayer.
Can please someone tell me in short what to do, so this will work.
When I try it sound is oke but the image freeses on my tv set. What do I do wrong. I'm using windows XP and i have an 100 Hertz tv. BsPlayer is installed on a laptop. The laptop is connected to the tv using an s-vhs cable. Other programs are working just fine accept BsPlayer.
Who can be of some assistance please.

Thanks Jumbo