Big problems making my own theme

Here’s how I coded it without the WP tags: http://www.swfmania.co.uk/swfmanianew/

Here’s how it looks with the WP tags & with WP installed:
http://www.swfmania.co.uk/swfmania2/

Anyone got any ideas? It looks to me as if WP just seems to ignore most of my CSS.

Any help much appreciated, SGT MattyW