try creating a shortcut using outlook /select filepath format. Get the file
path to the folder by selecting the folder and looking in the Advanced
toolbar's web tool.
http://www.outlook-tips.net/howto/commandlines.htm#select
it you want to open the address book, not the public folder, I don't know of
a way to do but you can set the PF as the first one shown when it opens.

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Diane Poremsky [MVP - Outlook]
Author, Teach Yourself Outlook 2003 in 24 Hours
Coauthor, OneNote 2003 for Windows (Visual QuickStart Guide)
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> have sbs2003 use office2003 on all clients, exchange, all is up and
> running
[quoted text clipped - 8 lines]
> once and need to make the big man happy. we've all been in my place before
> i'm sure. thanks Ed