Open Access documents are distributed as PDF documents, and the best way to read them is with Adobe Acrobat Reader version 6 or later.
If you're having trouble with Acrobat Reader and Open Access documents, try downloading the latest version for your computer below. (Or visit the Acrobat help site).
Go here to get it for your Windows PC.
Or your Mac.
Or your *nix box.
Or your Palm OS Device: Windows or Mac.
Or your Pocket PC.
Or find a version yourself: Adobe Acrobat
Or go to Acrobat Reader Distribution.