Hi, ana
I'm afraid Ray (popowich) is going to have to address the BT one. I'm not familiar with BT at all.
But, FWIW, if by "Outlook" you mean the email client (part of MS Office) I myself use Outlook (2007) and, although I'm the furthest thing from an expert on this, I can't think of anything off the top of my head that would account for the Chinese characters. ???
I did, however, do a quick search online and it seems there is a possibility that the problem is with the
recipients' Outlook settings. E.g. one
site suggested that playing with the settings in Outlook (specifically the encoding options) might fix things.
At another site (Ask Leo), although the article itself is not referring to Chinese characters specifically, in the
comments section there was an interesting comment by "Doc Ray" about settings in his Windows Live stationery.
Perhaps one or both of these ideas are places to start. ???
As I say, "popowich" will have to reply regarding BT, if that might be the problem.
I'll keep looking around online for possible answers.