David
Here's the links to get usb-serial-bluetooth adaptors going.
On Cloudynights
http://www.cloudynights.com/page/art...luetooth-r2929
And on that postthere's a link to instructions on the usconverters website. I got usb-serial from mwave and a serial-bluetooth from ebay.
I have a celelstron advanced GT (not so advanced anymore). Depending on what I doing I use a usb-serial adaptor (using Cartes Ceil or Stellarium on a PC - Ceil has better control) OR a serial-bluetooth (Skysafari Plus on android).
Cheers, Chris