Not working in IE

[WomenCan]

I have my FCG working on every browser except for IE, where it shows up but does not show the images. I can see the images are there if I click on the thumbnails but they are not coming up in the large frame.

Is there a fix for this? Do I need the images to be a certain kind (ie PNG, Indexed, etc)?

I have clients that are driving me nuts because they can't see their sites working properly, so I'd really appreciate anyone's help in resolving this issue as quickly as possible.

Sites affected are:
http://yvonnehale.com
http://womencaninternational.com
http://kathmazzella.com

Thanks in advance for your help.

[admin]

http://yvonnehale.com - wp-e-commerce and thickbox could be the issues for

http://womencaninternational.com - specify proper articleimg custom field for the first post in gallery

http://kathmazzella.com - nextgen-gallery could be the issue