Wordpress permalinks screwing up stylesheet

[Tim@DIM]

My client's site is self hosted on a windows server with IIS 11.
They recently upgraded the server.
PHP and mySQL are installed and functioning normally.

Ive never built a site on a windows server before - its always been apache servers.

The primary difference i am aware of is rather than the .htaccess it uses a web.config file.

Problem is when i switch permalink settings in Wordpress to anything other than deafult, the stylesheet stops working, as well as the iframe i have been using for the slideshow.

the end result looks like this:




but when i switch the permalinks back to 'default' it looks normal like this:



I dont understand what could possibly be causing this, but i figure someone more experienced than i am may be able to shed some light.

has anyone else run into this or similar problems?

Also when viewing the site in IE or chrome on pc, it looks normal,
but when i look at in chrome, FF, or safari (on mac os x lion) it displays as i showed you in the first screenshot.

the site in question can be found at: http://americanindustrialinc.com/wp