I met this issue on my laptop with English version XP installed. When installing wangwang from taobao.com, I met 乱码. I first thought it's due to the wangwang is not unicode-based. But I really don't think so. After google it, find out that it should be due to not installing chinese fonts! I opened word and found really no chinese fonts were installed there. How to install? A quick way is: change to Chinese(PRC) in language panal in Regional and language, and restart computer, and then chinese fonts will be installed. Now rerunning the installer, everything goes fine now.