Having trouble viewing or typing Khmer Unicode with Windows 8? Here are some solutions:
Download all known Khmer Unicode fonts and extract the .zip file and install them (right click and choose install on the font files):
In order to type Khmer Unicode you need a Khmer keyboard installed. Use the SBBIC Khmer Unicode Keyboard installer (works for 32-bit and 64-bit systems). Also we’ve included the – and : characters (Right ALT + D for the – and Right ALT + L for :):
Khmer Unicode actually doesn’t need to be installed on Windows 8, it’s just a matter of getting more fonts and a Khmer Unicode keyboard installed so you can utilize Khmer Unicode on Windows 8.
If you want the Windows 8 interface to be in Khmer, you can install the Khmer language pack.
You’ll need to download the language pack if you want to make a language your Windows display language (that’s the language you see most often in Windows and apps).
Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings.
(If you’re using a mouse, point to the lower-right corner of the screen, move the mouse pointer up, click Settings, and then click Change PC settings.)
Tap or click Time and language, and then tap or click Region and language.
Tap or click a language that says Language pack available underneath, and then tap or click Options.
Tap or click Download. The download process might take a while, depending on your PC and the size of the language pack.
If you want to make this your display language, see the next section “Change your Windows display language”.
(taken from: http://windows.microsoft.com/en-us/windows-8/using-multiple-languages)
Also make sure and use our Khmer spelling and grammar checker – installation instructions here: How to install our Khmer spelling and grammar checker