On Tue, 04 Mar 08 Jean-Pierre Trolet wrote:
(Garmin has given up with the 45 - no support - no update)

That's odd. Garmin still has the latest update for my old GPS12CX
(latest update 3/24/99) on their download page. I think the G45 was
about the same vintage.

Sorry, can't help.

Anyhow, there's an FAQ he
http://vancouver-webpages.com/peter/g45faq.txt

And you can download the manual he
http://tinyurl.com/z9owd

And if you don't get an answer here, you might try asking over on
sci.geo.satellite-nav

Rick