DVD space problem

I just downloaded openSUSE 11.1 x86_64bits and tried to burn it.
Well… It says there is a 26MB overload.
I’m using some normal 4.7GO DVDs and though it was quite a shame to have to go buy another kind of DVD (which would take a week to come) just for 26MB.
So I wonder if there is a way to compress the files so they fit in my dvd or if there is some useless files I can delete (like some pictures supposed to appear on the instalation).
I’m using Windows, and burning with UltraISO.

Fixed by trying without care about the overload. Everything seems to work now.

The size of the x86_64 ISO image is 4658399232 bytes only.