How do I use MAPI ... are there any samples around that I could have a look at.
There is a MAPI wrapper class in the downloads here written by Nigel Coates. There is also a class complete with sample form and text explanation in our newest book MegaFox: 1002 Things You Wanted to Know About Extending VFP The book is in copy edit at the moment and will be in print in about a month or so.