SIP plugin for Sparks

Hi guys,

Would really appericate any info on a SIP plugin for sparks that will make sparks a stand alone VoIP IM without having a need to get a secondary softphone to allow it to VoIP. Or does anyone know of a standalone VOIP IM that works with wildfire and asterisk-im which is free to use out there?

Any info is appreciated

Later

Zeirum