I'm sorry, I don't know how to do it. However, I want to warn that it's not the best thing to do anyway. You may be using Outlook, but others may be using plain-text email programs that won't see your data the way it looks when you send it. You would be better off, perhaps, pasting it into Word, and saving it as RTF, and sending as an attachment. Wordpad can open RTF files.
Also, there is File-Send to-Email recipient. Don't choose *as an attachment* and it should put it right in there for you. Perhaps you want to find the code to do that for you rather than copy/paste.