Exporting to animated .gif distorting image

[tradle]

Hey All -

I've created a few banners for a friend, and when I export them to animated .gif format, the border essentially disappears and the imagery that I've developed in Flash becomes slightly distorted.

Is there perhaps a setting in the export dialogue that I'm failing to set that might be causing this behavior?

I'm using Flash MX.

Thanks in advance -

Tim