[SOLVED] IE7 issues (Firefox good)

http://strategicsense.ca

For whatever reason, there's a line between the header image and the body that shows through of the background. It's not there in Firefox.

I have done two other sites the same way, and yet they are fine.

http://intheleadseat.com and http://pattidragland.com

I am using Dynamic Headers by Nicasio Design, on the first site and not on the others. That's the only difference, so I'm going to assume that's the cause of the line.

Does anyone have any suggestions to resolve that?

Thanks!

Velma