1. Open Outlook 2010.

2. Click the File tab.  

3. Click Options. 

4. This will open the "Outlook Options" window. Click Mail.

5. Click the Signatures... button.

6. This will open the "Signatures and Stationery" window. Select the desired account under Email Accounts:.


7. Click New. 


8. This will open the "New Signature" window. Type the name for your new signature and click OK.

9. Compose your signature and click OK.