If you are referring to the third-party application GMail Mobile for the BlackBerry, you can, like JSanders said, type in a search on Google to find more information. If you want to install the GMail Mobile third-party app on the BlackBerry, then you need to point the browser to "http://www.gmail.com/app"
i tried to install gmail using opera mini but im getting the error saying " i dont have any browder configuration service book entries".
What am i suppose to do?