http://img33.imageshack.us/img33/2294/tirosweb1.jpg
http://img132.imageshack.us/img132/1028/tirosweb2.jpg
http://img20.imageshack.us/img20/1223/tirosweb3.jpg
It just about works when I have my sidebar turned off, but I'm not sure why that should affect the positioning so much (it should just resize the page and the page should adapt). Looks like there might be fixed width stuff happening with right alignment, which you tend to want to avoid. Pages built for larger resolutions should be able to collapse back down to fit on smaller resolutions.
Oh, and one thing I might recommend is that rather than adding "back" at the top of the pages, you have a "home" button and a row of small thumbnails of each piece links, so people can jump through it all at once (rather than click, look, back, click, look, back, etc...).