I bought a licence to download Sat Nav software to use on my Treo Pro - I purchased a phone holder and with the charger plugged in everything works fine - the only problem is that unless I continually refresh the screen it locks and I get my opening screen which obscures the Sat nav information - I can still hear the voice but can't see the Sat Nav map - it's dangerous to try to enter a password to unlock the screen and it's too frequent to keep parking to unlock.

Is there a way of setting my Treo Pro not to shut down and require a password again?

Many thanks