Khmer Software Initiative

I'm a new member in Khmeros. i try to install Openoffice for Mac. when i open it, i can read only <Som Sva Khom Mok Kan Openoffice.org 2.0>. the rest of the words are boxes. i don't know what's wrong. anyways, I'm very new to mac and i don't know about computer much. i am also looking for khmer unicode for mac, but i don't know where to find it.i know everyone here is expert with computer stuff, so please help me with this issue.thanks:-D