Outlook Web App Auto Reply Question

I setup a shared mailbox and I need to setup an auto-reply for it.  I read that the easiest way is to do it through the Outlook Web App.  I setup the auto reply but I ened to add a logo to it as well.  I tried pasting it in and it doesn't work.

Does anybody know how to setup an auto reply for a shared mailbox with a logo in it?

Thanks