Have you tried to download it from Acer Support?
This is Acer Support, and the download page for Guides and Manuals, for the Aspire x1300 series of desktop computers,http://support.acer.com/acerpanam/desktop/2009/acer/aspire/AspireX1300/AspireX1300ul.shtml
The Acer Aspire X1300 User's Guide is the first file listed.
This file is a PDF file. The computer you are using has Adobe Reader on it, which uses PDF files.
After you left-click on - Acer Aspire X1300 User's Guide, you may not see anything happening for a few seconds.
The PDF file is downloading in the background.
Should you wish to save this PDF file to your computer, left-click on the Floppy Disk icon in the top header of the file.
(This way you can burn a copy off to a CD disk for safekeeping, and can also delete the file off of your computer, so that you will have more harddrive space)
The Floppy Disk icon is the second icon from the left, in the top header.
If you hover your mouse icon over the Floppy Disk icon, it will briefly reveal,
'Click to save this to your computer or another location'
After you have clicked on the Floppy Disk icon, a small window will come up.
Save a copy...
At the bottom of the Save a copy window is a box with - File name:
The name of the file is -
Go down to the bottom right of the Save a copy window, and left-click on - Save.
If you have your downloads set to save to your My Documents folder (Documents for Vista) this file will go there.
If you do Not have your documents set to save to your My Documents folder, this file will go to your desktop screen.
When you see the file name, Double-click on it to open it.
(Note* There is also a separate folder in My Documents. Downloads. The file may may be downloaded to the Downloads folder.
If you have trouble downloading this file, come back, and let me know, or if you have any additional questions about this.
Simply state so in a Comment.