Hello raulc,
This is Kevin from palmOne. Congratulations on your new Treo.
palmOne's Knowledge Library contains a very useful article on this entitled "Handheld Upgrade Guide for Treo 650"
here.
Hope that helps.
Two other worthwhile start pages are
Treo 650 Smartphone Community and
Support for Treo 650 Smartphones
And don't forget to register your new Treo
here for information on discounts and promotional offers.
Enjoy : )
Kevin