I have a Jentro BT GTS which is a nice piece of kit. I have used it with a PDA and with a laptop. It should work with any GPS mapping software which is on a device with bluetooth. e.g. Nokia phones with Ovi maps
I did hear a couple of reports of communication problems particularly if people try using test software such as sirfdemo. If this happens, run battery down and it should be OK again.
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