HTML Signature file

Hi.I am trying to create a signature file that is not visible when the e-mail is being composed, but when opened by the recipient, downloads the company logo and other stuff.

I have created a file, but it downloads everything when the message is composed adding (what I consider) unacceptable size to the message. When I put passthru HTML on the form (in the body field), it either doesn’t appear at the far end or appears as HTML (which kinda sucks).

Any ideas?

TIA

BG