[Trisquel-users] mobile broadband setup

[tr33hugger]

I have an old 3 mobile broadband dongle (PAYG) that still works on win 7.  
Recently tried it with Trisquel but can't make it connect.

With windows it auto configures and signs on to the network. No passwords or  
sign in names are used.

Trisquel allows editing of network connections so have changed a few settings  
but no connection occurs.
Has anyone used a 3 dongle with Trisquel ?