Speedtouch internet connection

[Phil Cooper]

Hi folks;

I've got my nice (hoary) Ubuntu desktop working pretty much as I'd  
like it, and now the only thing that's tying me to Windows is my  
internet connection and Window's ICS. So, my questions:

1. Is it easy to get online using a USB Speedtouch 330 modem? I have  
broadband, but connect using a username and password. Where do I start?

2. I'll need my Ubuntu box to share this connection with a Windows  
and Mac box which get their settings via DHCP - so I presume I can  
get my new Ubuntu box to be a DHCP server?

Thanks from a complete Linux newbie.

  - Phil.