Need Assistance freepbx

Please I need assistance setting up my new asterisk and freepbx installed in CentOS 4.4 without using any hardware, I installed asterisk and freepbx without any error but I don’t understand how to configure…

I have 1 account from voipmatrix and I want to use it on 10 soft phones connected to my asterisk pbx, how to I configure this on my freepbx? Please help me…

Thanks…