- In Outlook 2010 go to File -> Options -> Mail -> Signatures
- Click “New”, create it, name it, and save it
- Win XP go to C:\Documents and Settings\USER NAME\Application Data\Microsoft\Signatures. Win 7 go to C:\Users\USER NAME\AppData\Roaming\Microsoft\Signatures
- Within this folder you will find the newly created signature
- Edit the htm file with your preferred HTML editor and save it
- Return to the Outlook Options and select it