I am a user of SE P990 and I would like to use its 3G and wifi connectivities for making calls. Anyone here can help me out in getting SIP software for making calls for my symbian UIQ based device?

thanks in advance

wikipedia has a list of compatible softwares: http://en.wikipedia.org/wiki/List_of_SIP_software

check out http://www.fring.com/

It has a version for UiQ