>Great; actually I wasn't quite sure about the interaction between Word and Outlook, which I never used.

Well, it works and it doesn't. In order to have it working, I had to restart Outlook. Then, I simulated the same phrase which kicked it in in the first place. I saw that it went ok. This time, the text remained unchanged. Then, two hours later, I did the same test again and found that it started to do as it did before. So, I went into Outlook and found and option about the auto correction which I disabled. I am not sure however it this would be a factor.