The wife and I are heading overseas mid-year and I have a bit of a conundrum.

Our digital camera is a Sony DSC-R1 which is still absolutely fantastic and I have no inclination to upgrade it.  However now that we have iPhoto '09 and a great use for Geotagged phtos I'd like to take the plunge.

Does anyone have any first hand experience with adding a GPS adapter to an existing camera?  I realise there are now CF Cards available with built in GPS that will tag the photos as you take them, but if possible would prefer to use our existing CF I cards (1GB, 4GB and 16GB, all CF I).

I realise sony have an accessory available (, but would prefer on the fly if possible.