if i want to chat with someone who is from another country, will they be able to read my message in their own language, or do I have to set something on my computer.

Yes you will have to set your computer to translate and you do this by opening up programs and there you chance your language to for ex. chinese...是的，您必須設置您的計算機翻譯，你要做到這一點，開放的程序和有你的機會你的語言來為前戰鬥。中文.....lol.

No nothing just use English as the site is in English and those who can't read or write can use Google Translate or just keep quiet.   

Thanks for the tip