Manually Backup entire Windows Registry

Before editing the registry, the key actions users need to take is to perform a complete backup of the system registry.
Although most readers may know how to do it, here is a quick way to perform a full registry backup.

1. Click Start, and then click Run.

2. Type regedit in the Open dialog box and click OK.

3. Right-click the top most node in the list in Registry Editor and click Export.
Type the name for the back-up file and click OK.












4. To restore the Back-up, just double click the back-up.

Login Multiple Yahoo! Messenger Accounts Simultaneously

Want to chat using multiple Yahoo IDs at the same time? It is possible to have two Yahoo! Messengers open simultaneously, each with different login IDs, in the same PC. To do this, you'll have to edit the Windows registry.

Note: Editing the registry the wrong way can cause serious consequences. Make sure you back up the registry before editing. Click here to learn to Backup the Windows registry.

1. Go to Start >> Run. Type 'Regedit' and press Enter. This opens the Registry editor.
2. Navigate to
HKEY_CURRENT_USER\Software\Yahoo\Pager\Test
3. Right-Click on any blank space in the right panel and select New >> DWORD value. Rename this newly create DWORD key as Plural.


4. Double-Click it and change its value data to 1. Click OK.

That's all! Now open Yahoo! Messenger and login with an ID. Open another instance of Yahoo! Messenger and login with a different ID.

To disable multi-login, just delete the Plural key from the Registry.