O.K. to delete Program Files/Ahead folder?

Hi, I upgraded from Nero 6.6 to 7.5 a while ago. I uninstalled 6.6 before I went to 7.5. 7.5 works great… no problems. Anyway, I noticed today that Nero 7.5 is installed in the Program Files/Nero folder. I still have the Ahead folder in Program Files as well, I noticed from checking the file versions of the .exe files in the Ahead folder that it’s from version 6.6. Does Nero 7.5 rely on anything in the Ahead folder or just the new Nero folder it created? Can I delete the Ahead folder since there’s still 122mb of stuff in there taking up space?