Tricia,
I am assuming you are using Outlook Express version 6. If this is so then
you can change or add your signature as follows:
1) On the Tools menu, click Options, and then click the Signatures tab.
2) To create a signature, click New and then either enter text in the Edit
Signature box or click File, and then find the text or HTML file you'd like
to use.
3) Select the Add signatures to all outgoing messages check box.
If you are using Outlook then please let us know so that we can give you
step by step instructions.
hth