GPS cable for Clie 665

[on-the-go]

I have an Earthmate GPS from my old Palm Vx, and would like to use it on my new Clie 665. I contacted Delorme, and they have have cables to support the Sony PEG-610C.

Can anyone tell me if the 665 and the 610C use the same cables? If not, does anyone know of a Sony 665 to DB9 serial cable from anyone?

Thanks