I only need to know (to insure myself ) that MUS can make this:
connect over 70 PC's with Windows XP
I need to make an applcation with a program control (1 PC) and client program (70 PCs) for a system voting. Aplication control send a message to 70 PCs to vote then PCs send their response and the Control App receive data and show results.
Is MUS stable and robust for this kind of applications?
The connection with PC's must be about 6 hours in line.
What things must I control?
The MUS should be more than capable for what you describe. I'm not sure how many connections you are permitted without an 8.5 license number though. You might want to consider the (free) OpenSMUS
25 is the maximum number of connections without a license.