To have Opera in Khmer,
Click here to download Khmer Language Package
Click here to download Opera 10.53
How to Install for Windows 7 and XP:
1. Install Opera in C:\
2. Extract km.zip (Khmer Language Package)
3. Copy km folder to C:\Program Files\Opera\locale\
After that you have to configure Opera's interface to be displayed fully in Khmer as followings:
1. Go to Menu → Settings → Preferences...
2. Click on Details... (at the right down side of window)
3. Click Add → Choose ភាសាខ្មែរ (ភាសាខ្មែរ) → Click OK
Change Language package's path in
User Interface Language: C:\Program Files\Opera\locale\km\km.lngChange encoding type in:
Encoding to assume for pages lacking specification : UTF-84. Click OK
5. Change Language in Select your preferred language for Opera and Webpage : ភាសាខ្មែរ [km]
6. Click OK
For Windows Vista and Windows 7, you should change default Khmer font to KhmerOS font to be displayed on Desktop via previous post.
Now enjoy Opera Web Browser in Khmer...
Source: http://operakhmer.wordpress.com