.mac alternative for publishing multiple sites

So I have what seems to me to a somewhat specific use for .mac.

I have a professionally designed site for my business (film production) and that is all great.

When we do any location scouting we have (in the past) created a new "site" in iWeb and then created pages for the photos from each location that we scouted. The client then can look at the images and decide where they want to shoot. We could have multiple "sites" live at any given time.

From what I have deduced from the way that iWeb and .mac interact is essentially that each of my "sites" are just different directories within my iDisk so to speak. And each site just contains links to the sub-directories but not to the other "sites".

We have our own domain but is it ridiculous to have our developer create a portal of sorts where we can still do what we do now with .mac? Could we get a subdomain and publish via ftp to the subdomain without interfering in our other site eg clients.productions.com?

I'm not opposed to other software like rapidweaver or perhaps just stay within lightroom and use it's built in publishing abilities. I have been doing research and haven't found a clear way to accommodate the appearance of separate "sites" within lightroom. Not to say that it doesn't exist or that it's something simple that I just can't think of.

Anyhow I'm starting to ramble. Any help or suggestions would be great.

Nathan