Geoff wrote:

I have just found the answer to my question in case anyone else is
interested.
Apparently, Outlook downloads in alphabetical order of the name which
you have given to the account so the solution is to rename the
various accounts in the order that you want them downloaded.
Microsoft article ID 224416, applies to Outlook Express but the same
thing appears to apply to Outlook.

http://support.microsoft.com/kb/224416/en-us

Probably because of the high level of integration between Outlook Express
and Outlook 2000 IMO.
--
Brian Tillman [MVP-Outlook]