Multiple Gmail account login problem

People, i have a problem to sign in to a multiple accounts on Gmail.
I had to reinstall my browser, i use Chrome, and i have 3.5.6 X-Notifier version.
I completed all the  information of my accounts, but when i tried to open the different inbox of my accounts only open the default main account!
Someone knows how to resolve this problem?

Thanks in advance and sorry for my bad english.

Matias.