Sneaky “ghost” CSS tags

Hi all-
I’m trying to get my archives page to look like the normal front blog page. Easy, right? It’s practically the same code from index.php, except there’s get_exerpt instead of get_content and some other errata.

Well, some document somewhere is overriding my CSS tags – for example, I have it set so it displays the posting, then under it is the comments tag and categories (on the right), with a border-bottom under all that, then the next post appears. However, my archives page is getting tags from a different source than the ones on archive.php so the comments/categories appear below the bottom border, when in fact they should be above as according to the tags I have set. There’s an outside set of tags that I recognize from the default theme (div.narrowcolumn#content) that show up instead of the ones I’ve specified in archives.php. (And narrowcolumn doesn’t exist on the style sheet I designed, so it’s messing everything up.)

The quick solution would be to simply copy my tags and throw in the narrowcolumn and crap so it shows up… but it still doesn’t tell me what page is feeding into the archive.php and overwriting the tags I’ve already written.

I’d love to give a sample, but unfortunately it’s on our dev server and is password protected. ??