This is probably a really stupid problem, but I've tried really hard and I can't fix it.

I created some images with the rounded square tool in FireWorks, saved them as .gif images and positioned them in a layout table in DreamWeaver. When I preview the page in Internet Explorer, the canvas at the corners of the rounded square shows up no matter what color i change the background to in the page properties in DreamWeaver. I was wondering if someone could tell me how to get rid of the canvas altogether if possible, or at least show me a trick to avoid this problem, any help is greatly appreciated.

Cheers.

Be sure you are saving the images with the transparency option selected. When you export the image, you have several optimization options. One of them should be a transparency option.

Did you save the image as transparent PNG ?? If so that is the problem, IE 6 and below cannot display transparent PNG's w/o help.