Perfect rounded content box without jaggies

[dazsly]

Hi im trying to create content boxes with rounded corners but when i save to giff and import into my html you can see the jaggies unless I use a white background, How can I create graphics that have anti-aliasing? is their a free program that could create them?

I use xara x1 and photoshop elements.

I know they are not major packages but I only work for a small company.

By the way I know xara uses AA but that still doesn't make a difference.