I'm using Acrobat Pro 8 and I want to crop to include only the content of scanned pages (about 7 x 9.75 in) centered on a page size of 7.75 x 10.75.

I use the Crop tool to select the content, then double-click inside the crop area per Help, and in the "Crop Pages" dialog, under "Change Page Size" I select "Custom" and enter 7.75 and 10.75 ("Center" remains checked). But when I then click Okay nothing has happened.

Any suggestions greatly appreciated!

Happy Holidays!

Ken