Hi Gabriel,
You could program both keys on the 7941 to use "Hotdials" and
they would only ring the two pre-programmed numbers
The step by step directions in this guide are very good
Hotdial on IP Phones with CallManager Configuration Example
http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_configuration_example09186a0080232b9f.shtml
Cheers!
Rob
"Spend your life waiting,
for a moment that just don't come,
Well, don't waste your time waiting"
-Springsteen