VideoBlaster Special Edition can only conference at 160x120?

The Chinese High School (
Thu, 16 Nov 1995 19:39:44 +0800 (SST)

We are using Video Blaster SE, and abled to capture local video at
160x120. But when we change the resolution, the video either freeze or
can't see anything at all.(the local video windows refused to resize) Is
this the limitation of VBSE or is there anything that I can set?