troubleshooting vt37a video viewing

[pip55]

Hello,
I'm running an XP OS with Showtime VT37A Sender.  I can view JPG pictures fine on my TV but I haven't yet been able to view any videos.  After loading with Picture Wizard to suitable folder and clicking on it to begin viewing,  the software tries to load, the screen goes dark and then stalls out.  I've tried copying to C:\,Bookmarked,  since my movies are stored on another drive but doesn't make a difference.  The system doesn't crash and I can close Showtime but video viewing won't start up.  I've been trying .avi's mainly.
Thanks