Thanks *bad*angel, I was able to check under My eBay->Account->Addresses and yes that was correct. I eventually found how to change my signature block under Messages:
Click the Messages tab in My eBay.
Select the Change settings link on the top right side of the page.
In the Email Signature section, select Show signature.
Enter your signature in the text box that appears. We provide an example in the text box to help you.
If you have an eBay Store, you can also add your Store logo by selecting the Add my store logo check box.
Click the Apply button.
Thanks, after looking at your response I was able to stumble on what I needed! I don't know how I managed to put a signature block on in the first place! It was some time ago though....so that is my excuse for forgetting!
