I have a Blackberry 8520, I have tried to set up my email address as normal. When you go to setup > set up current email address. I have checked on the PC, and my gmail account does work and is active. But as soon as I set it up with my Blackberry then it say invalid email address or password, go to gmail.com.. tried that.. nothing works.. HELLLLLP! Getting so fustrated!

I think your blackberry service provider could help you best with this issue. There could be a problem with your service or device that they might be able to identify, diagnose and solve.