Hi
You can find several serial/bluetooth modules on the market nowdays.
I use
Free2Move F2M03GLA modules (lowest cost for me, 28€ without VAT) :
http://www.free2move.se/index.php?type=view&pk=22&pk_language=1http://www.lextronic.fr/rayon.php?id=1538Very easy : Just connect it to Rx, Tx pins of your PIC.
It can act as transparent serial link or may be used with AT modem like commands
If you stay in SPP serial BT profile you can send/receive with PC, Phones, PocketsPC...
Ezurio is another brand.....
Regards