Bluetooth Connect to mobile phone

Has anyone got any pointers on how to connect a microprocessor to a mobile phone by bluetooth.

It would be nice to make use of one of the non USB bluetooth modules such as the BlueSMiRF or the RS232 RF-BlueDongle.

Thanks

See [this thread and [this thread](BlueSMiRF & bluetooth phone - SparkFun Electronics Forum)](BlueTooth phone to BlueSMiRF? - SparkFun Electronics Forum)