Adding image & hyperlinks to signature in email


I am using Mac OSX V.10.4 with the mailer v. 2.0

There is no option to add a photo to my signature in the preferences.

When I drag an image into the signature box, it works although only as an attachment to the receivers.

How do I use an image in my signature reply that can incorporate an image as well as text, including hyperlinks that users can click on (an ideally that users would not receive as an attachment)?

I'm looking for a way to create a logo design as a signature that has all the conctact info. including links to a website and e-mail address.