Posting image as separate variable from post description? CMS help!

Here’s what I’d like to do, and I hope I can explain this well enough for some good in-depth support…

Using WP as a CMS, front page is not the blog, and on my blog page which is like a showcase of work, so basically one image that I want consistently sized, a title (ya thats in there), and a description. The title and description are part of the “post” screen already in WP – thats fine. What I’m looking for is the ability to have the image as a separate item from the description so I can pull that image variable for each post and have it display as a “recent work” thing on the home page in WP…

As I see it, the image would have to be a separate field or variable from the post description, but I don’t know how to do this.

It seems others have done similar things with WP but I’d like to know if I’m overlooking a simple trick or what hacking I have to do to get it to operate as such.

Thank you in advance for the help!