Broadband set up

[Mervyn & Giuliana Bond]

I am considering switching to broadband.  IInet offer a one port 
Belkin Router with VoIP or a four port.
My intention is to transfer my telephone account and computer 
connection into one account.
Around the house I have four telephone sockets.  Two have an ordinary 
telephone handset on each.  A third has a cordless phone connected to 
it.  The fourth has a "double adapter" with one line going to a 
phone-fax and the other to my iMac for dial up connection.
What is the preferred set up under these conditions?
Merv
--
"Science teaches that we must see in order to believe, but we must 
also believe in order to see."