jagged 3D charts in 2007

I need help!!!1..What can I do to get around the jagged 3D column charts when I put them in Powerpoint. The columns look all jagged. I used to get around that in 2003 by right clicking on the pasted chart and clicking on “edit picture” saying yes to converting to a drawing object. In 2003 that would make the chart columns and gridlines crisp.

What can I do to fix this?
Please help..meeting tomorrow afternoon!