How can I programatically retrieve archived mail items as msg files?

Hello,

I'm writing a program which needs to save archived mail items as .msg files. What's the standard way of doing that please? Can I use a http GET, or do I need to use EV APIs? Any examples out there?

I have access to stub and its shortcut data. Environment is Exchange 2003/2010 and EV904.

Thanks,

- Alan.