I'm sure there's no easy way. Powerpoint, I'm sure, has a bunch of internal codes that you never really see in order to keep it all editable and related together. When it's converted to PDF, it throws all that stuff away, only keeping what's needed to actually show the info.

You're probably right. I couldn't find such a utility on the net anyway. My best bet would be to use photoshop 6.0 and actually start manually removing that background. In really don't know if I want to do this.

You could ask your professor for the original.

Good idea. I might just do that.

And thanks Robricc for that mod. I will use that file instead of the original.

Oh, and in any case somebody was actually wondering : The slides are written in Dutch and concern Belgian public and constitutional law. (I'm sure everybody is thrilled now )

Thanks!