Trouble playing Onscripter visual novels

Hi there,

I've just discovered the wonders that are visual novels.
I've downloaded some of the novels released at your site.
But i have trouble playing the novels built using onscripter.
When i launch the novels by clicking their icons,
nothing shows up in the window although the music plays.
It's not even a blank black screen but my background wallpaper
showing up in the window. Tried waiting for several minutes incase
the novel was loading or something and clicking on it now and
then but still nothing changed.

I'm running on win xp sp2 so it should be compatible for running
onscripter novels. Could someone please help me on this?