IE is ignoring floats on my gallery page

[jbinoculars]

I am having a problem with IE7 (i am not concerning myself with earlier browsers as this is a personal site and everyone I know use at least IE7) ignoring the floats in my css. It renders correctly in Firefox, Safari and Opera when tested (in short, it should be 3 images per row, but in IE7 the images don't float at all and fall underneath one another). I am new to web design and I am also using Wordpress as a CMS. The images are managed through a plugin called Next Gen gallery (some CSS is from there but most is through my own style sheet).

Here is a link to the page in question:
http://www.julesandbinoculars.com/portfolio/

Let me kow if anyone out there has any ideas on how to get this to work. I am not sure if I should post some code but I feel most people out there probably use firebug so I don't want to clog up the post with code.

Thanks in advance to whoever could assist me on getting this straightened out.

[Nile]

Try this.

Good Luck!