are there any tutorails out there that would show you how to create an email postcard similar to this?

http://www.swankmartini.com/swank_martini_postcards.htm

 

I would be most grateful to any who could point me this way

It may not be exactly what you want - ie give you the design functionality as I would understand it - however this site might be useful in some way

 

http://www.postalz.com/