Bluetooth and ZigBee Transmission..

Hello guys.

I have a wireless ECG project that needs to be finished. I do have the analogue part mostly complete.

Talking about the digital domain, we will be performing digital filtering and data transmission using both Bluetooth and Zigbee modules.

I wanted to know how exactly should I move in order to achieve my goals as far as the Data transmission is concerned.
We will mostly be using the PIC 16 or PIC 18 family of micro controllers.

Any related documents, links, projects or experiences can be shared.
Your help would be highly appreciated.

Thanks,
Faisal