CSS Drop Down Menu help

Hi all,
I'm learning CSS at the moment and tried to make a drop down menu bar using the same techniques I saw on another site. I thought everything was going well until I realised it won't work in Internet Explorer (fine in Firefox and Safari though).

I went back to the site using the same techniques and it works fine in all browsers but mine doesn't!

I'm not sure exactly what I'm missing... it's driving me crazy and I really could use some help.

My page is here:
http://www.sfkforthenovice.com/main.php

CSS file is here
http://www.sfkforthenovice.com/main.css

Any help would be greatly appreciated

 

Internet Explorer isn't very good at rendering CSS properly, IE7 is a bit better though but still in beta. Going through the CSS would take a while and probably not produce many results, you say you used an example to work from ? perhaps if we could see the style sheet for that it would help?

I just loaded the CSS quickly in Visual Studio and its telling me a couple of things.

cursor: pointer; (in .thumb) isn't a valid value you probably want to use hand or auto

you havn't specified units when using 0 when you use margins or padding etc, probably not a major issue but I think valid CSS should include units.