remotely display one post for a specific category?

Hey all,

I tried searching to see if this had been asked before, but I couldn’t find anything with the myriad keywords I attempted, so here goes:

I run a photo blog at dishevel.burntsienna.nu. I have a main portfolio site at the root, burntsienna.nu. I currently have a “photo of the week” page that’s static, but I want to make it so that it displays the latest post I have under my dishevel.burntsienna.nu blog, but only under the category “photolog.” Just the latest post, that’s it (and to be greedy, a list of archives, but that isn’t important). I am not sure if I need RSS feeds for this or not, as it’s going to be directly imported into the “photo of the week” page on my main website. Do I have to author a sort of hacked-up wordpress php file that references my photoblog, or is it as simple as some sort of link rel?

Any help would be great, thanks in advance.