Why can't I send Video???

Sat, 7 Oct 95 10:35:35 PDT

I have a:

Macintosh Centris 650 40 rams / 1 gig harddrive
28.8 modem
PPP account on a regular phone line
Video Spigot card
Video camera

I have been able to receive video with no problem, but not audio. Also I
have thus far been unable to send video, the "I will send video" checkbox
is always grayed out.

What do I need to do?

Some body pllllllease help me.