The first step of the practice was to move all the non-essential fonts out of the default Windows/Font folder. I think I moved all my Chinese fonts by mistake by later I moved them back and they installed successfully.
But now I've got a problem - I can see Simplified Chinese in conversation windows and emails on the web. But not on the "frame" - the MSN Messenger Frame, any webpage header so when I shrink things down onto the taskbar and they all have Chinese titles it'd be a string of squares showing.
I checked the system font folder and it's got all the Chinese fonts that was there. But why is this happening? Could anyone help please?