Entourage:

Create a default signature for each email you send, or create multiple signatures to add to messages on an as needed basis.

 Create an Email Signature

1. From the upper menu select Tools
2. Click Signatures
3. Click New [the green dot with plus sign]
4. In the Name box, type a title for the signature
5. In the lower portion of the signature window, type the text that you want to include in the signature
6. Close and Save
   The signature is now ready to use. Repeat steps 1-6 to create more signatures to select from

Set Default Signature  

1. From the upper menu select Tools
2. Select Accounts
3. Select the Mail tab
4. Double-click the account that you want to set a default signature for
5. Select the Options tab
6. Under Message Options select a signature from the Default signature pop-up window 

Add Signature to Message

1. Create a Message
2. From Message Menu select Signature
3. Chose the Signature from the list

 Automatic Spell Check

1. Select Preferences from Entourage menu
2. Select Spelling from the General Preferences
3. Check Always check spelling before queuing outgoing messages
4. Click Ok