Haii all

i need a internet dialer software for nokia n900.(dialer need for middle east contrys) Last six month iam searching for this software. i want i make call through voip.(site name is www.metrovoipcalls.com) i have a account in this site. but there is no dialer for this site. nokia e series there is a software prontodialer.sis,we can login through this software and we can makecalls through this software can i get like this software in nokia n 900.

or is there is any SIP settings i have to do for this metrovoipcalls site. Is there is any commaon dialer software nokia n900.

Please anybody can help me