What to do install VOIP in my Nokia N70 mobile?

Hi pals, I'm new to this area. I was searching for the help regarding VOIP and reached here. Ofcourse it's very helpful. But still I didn't get what I needed. Could somebody help me, please. I bought my N70 from Saudi 2years back. I've a Sawa(STC prepaid)connection with 3G internet service activated. I'ld like to install VOIP facility in this phone as my own. I came to know this is possible only with the new generation phones, ie N70 and above of Nokia. I saw Vinay's post 'Nymgo VOIP SIP Configuration Settings' posted on Jan.25,2009. in 'voipguides.blogspot.com'.I noted the settings mentioned there. ( SIP Server Or SIP Proxy Server: ata.nymgo.com SIP User ID: nymgo username Authenticate ID: nymgo username SIP password: nymgo password SIP Port: 5060 Codec Used: g729 STUN Server: stun.nymgo.com STUN port: 80) I already have an account in 'Nymgo' and 'actionvoip' and using from my desktop. I couldn't find any option under 'connection'(menu>tools>settings>connection) in my mobile. There is no word 'SIP'. Should I install 'nymbuzz' first for this. What to do after that? Can I have a clear guidance (step by step)? This might have been discussed earlier. If so please get me the reference or link for the particular page. I hope anyone who read this first will show me a way. Thankfully jaymro@gmail.com
No answers posted yet