Sharing a Dial-up with Three Computers Using  Windows Internet Connection Sharing

Q.  Do you think having three computers share one phone line is too much? Would you suggest having one phone lines for voice calls and another for just the computers?

A.  Sharing one Internet line between three computers should work, but it depends on how heavily each of the computers (users) use it, how fast the MODEM line is, and how much some slow-down is tolerable by the users.  I would try it on the voice line first, and get a separate line if the cost is justified.