Dunno if these help:
Open-Source Bluetooth Simulator:
http://oss.software.ibm.com/bluehoc/

Bluetooth Protocol Analyzer Comparison Chart:
http://www.palowireless.com/bluetooth...tequip.asp
(analysers can often also do simulation)

I just typed "+Bluetooth +HCI +Simulator" into AltaVista:
http://uk.altavista.com/q?pg=q&te...h&what=web