Most of the user manuals are written in Adobe Acrobat (.pdf)format. Thus, you may need to download the Acrobat-Readerfreely from Adobe's web site at http://www.adobe.com/ http://www.adobe.com/products/acrobat/readstep2.html ( Or, download the copy of Acrobat Reader from this link.(v5.0.5 Size:9.94MB) )