asterisk users - Feb 2005 - Italian speaking. Asterisk configuration and needs

Hi,
is there someone who speaks in Italian?
I'll try to explain in english my problem, but if there is someone who
speaks
italian i think it would be better for me.
I'd like to use asterisk only as IVR and call diverting.  I have only one
phone line, and no other phones, all the calls arrive at one number.
I would like something that answare, and depending from the 'street'
followed
by the ivr, it diverts the call to an other phone number.
What do I need for implementing it? 
I have a server whith Linux suse, an ADSL connection, a telephone line. 
Thanks to everyone that can help me, and also to the others :-)



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