sharing two internet connection

Hi, group how you doing? I have a workgroup consisting of 18 hosts and
I have also two internet connections, how can I share the two internet
connection to the work groups? If the internet connection were only one
I know how to configure the computers to share this internet connection
but my problem is that there are two dial-up internet connections and I
want to share the two internet connections by dividing the work group
into two as far as the internet connection is concerned. Any help to
solve these, thanks.

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