Here is a neat little tool.
I have not tried it yet since I use Hosted Exchange.
From your phone browse to this address http://www.gmail.com/app
Now download the program for your phone.
My guess is that this will only work on phones with Java enabled
If you have a Palm Treo you will need to do the following.
go to the following link:
select your pphone, your service carrier, and then download the IBM
Java application (Java Virtual Machine), THEN download the Gmail applet.
Have Fun with it
Be daring and install it
Your Local Tech