MLH is an IE7 addon that helps you to open multiple accounts on a website in the same IE7 broswer. Currently, you cannot access two different account on a website (for example your bank site) from the same IE7 browser, due to the sharing of sessions in the same process. You need to start two browsers to check multiple accounts which render the advantages of tabs useless in such scenarios.
Want to monitor those multiple accounts using tabs in a single IE7 browser? Want to check both yours and your spouse’s bank accounts from a single browser? Then check out Multi-Login Helper. Download the addon from http://digiratii.com