Doubts in Sip Communicator

Hi,

 

i need some information regarding sip-communicator 1.0

 

1. Where i can find the updated sip communicator 1.0 source code with SIP protocol implementation..?

 

2. In the previous version sip-communicator 1.0, i saw "contactlist.xml" as the file for having the information of the contacts of a user.. In the source file, where is it available..? or where it placing the user's contacts information..?

 

3. i decide to put all my contacts of a user in a XML file. but i don't know how to retrive it and show in a List..? can u explain me..

 

sorry, my english may be very poor.

 

regards,
Gokul