10-14-2008 08:25 AM
It has been a while since I played with Sametime's APIs but they used to have an http API that you should be able to go agaisnt from your app on the phone. I think they also have a RESTful web service API too.
You could also try packaging their .jar files into your RIM app on the phone and doing straight Java calls. What version of Sametime are you using?