How can I veiw a 2nd account

I have set up 2 different accounts each with thier own username and log in. One is the administrator and other as a standard account.

Using IE7 I log in as the administrator and then start FireFox and log in as the 2nd user.

As administrator I want to see the contacts and accounts in the other users CRM.

For some reason I just can't figure out how to do that. Can anyone help?

If so please contact h_rubin@yahoo.com

Thanks,