I have now solved the problem of Send to GPS not working, however it did involve having to use a PC
Out of desperation I thought I would try and upgrade the GPS software which was still at version 2.60 to the latest version 3.00 so after much tooing and froing installing USB drivers etc on a PC I managed to upgrade, and when I then tried the send to GPS it worked perfectly And using Safari too
Thanks Uncle Jimbo for your reply about Firefox, weird about Google Maps, as Firefox works OK on our Mini Mac, it only went wrong on the Power Mac after a Firefox update, and there are a few threads in other sites that it is a genuine problem, just a question a to whether they will fix it