I've tried several of the default styles (Bryant, Orange Crush, Beckett, Stevenson) on my blog and the right column appears underneath the main body rather than on the right. I haven't edited them at all and am using the default templates for everything else. Am I doing something wrong, such as the images in my posts being too wide? (for example - Masala columns render properly but the images overlap the body container.)

Oh - and I'm not using the StyleCatcher plugin.

Any help would be appreciated - thanks!

In addition to the CSS you've downloaded, you also need to get base-weblog.css (that is where the column positioning is defined, etc). I would recommend downloading the zip file and following the installation instructions here:
http://www.sixapart.com/movabletype/kb/cus...ying_a_new.html

Thanks - I did that (making sure the css files were uploaded in ASCII) and put the following code in the stylesheet template

@import url(/mtype/mt-static/themes/theme-bryant/theme-bryant.css);


Now I'm not getting any styles at all.

Try putting the following 2 lines in your stylesheet template:

@import url(http://www.bulin.com/mtype/mt-static/themes/theme-bryant/base-weblog.css);
@import url(http://www.bulin.com/mtype/mt-static/themes/theme-bryant/theme-bryant.css);

It seems like your styles are being fed from the bulin.com URL instead of your own.

Thank you so much!