Media Streaming Server OR Media Interactive Server ?

I need urgently to build simple streaming live video web application.

i need to create some live video streams from webcam
in one computer through my server to webcam in another computer

is Adobe Flash Media Streaming Server is able to do it

or only Adobe Flash Media Interactive Server is able to do it?

if Adobe Flash Media Streaming Server is able to deal with live video streams

is there any major difference between them like for example

is it possible to record live video streams in Media Streaming Server ?

The only clear difference between them is the price...

I can afford baying the Media Streaming Server

bat not the Media Interactive Server and i need to decide

before i am turning to other very less quality java based solutions

please please help

thanks

cheinan