Bluetooth for Arduino - how many digital IOs required?

Hello all –

– I’d like to add a bluetooth radio to an existing Arduino project, and I have a couple of questions. First, will the new SparkFun Bluetooth DIP module (WRL-08461) work for this purpose? I’d get a BlueSmirf, which I know works well with Arduino, but they’re sold out. Second, how many IO pins will be required? I was hoping to use just RX/TX, but from the schematics it seems like you might need more for reset, clock, status, and what-not. Finally, will the 5v off the arduino kill this thing? It’s supposed to take 3.3v…

Thank you very much –

– Todd