I have tons of dupes in calendars & contacts. they're all duplicated
in Entourage, Address Book, iCal & Pocket PC. I've tried a few things,
like AB Dupe and a script I found for Address Book. None work. I am
looking for a tool or tools that will get rid of them.

Hi,

You can test this software - PocketMac® Pro

The latest version is 3.51.
Web Intro with Screnshots:http://www.pocketmac.net/products/pmpro3/pmpro3.html

"you can synchronize your contacts, calendar, tasks, email and more
between the Pocket PC and Entourage/ iCal/ Address Book /Mail.app on
10.3 "Panther"...
"

Here's What PocketMac Pro Can Do For You:

1.Bluetooth 
2.Entourage 
3.Address Book 
4.iCal 
5.Mail.app 
6.iSync 
7.iTunes 
8.iPhoto 
9.PocketWord 
10.PocketExcel 
11.Now Contact 
12.Installation 
13.Desktop Mounting

Really Powerful, right?

Another Choice is Missing Sync.

Web: http://www.markspace.com/missingsync_windowsmobile.php

You can find the Supported PPC Model Here:
http://www.markspace.com/missingsync_wm_devices.html

Features - see the supported device list 

?   Support for Mac OS X Tiger
?   Synchronize with Address Book & iCal  <-- It`s YOUR NEED!
?   Synchronize with Microsoft Entourage 2004
    Contacts, Dates & Tasks  <-- It`s YOUR NEED!
?   Connect via USB cable/dock, Bluetooth or Wi-Fi
?   Mount your Pocket PC on the Mac OS X Desktop
?   Import/export images with iPhoto
?   Send/receive email and surf the web *
?   SyncMinder? reminds you to sync
?   Install Pocket PC apps in CAB format
?   Includes AvantGo client *
?   Includes SplashPhoto Viewer
?   All-new user interface
?   Plugin architecture supports future additions 

* For Pocket PC devices only 

you should view this two software web intro (features, requirements,
price) to pick the right one for your MAC. Of course, you can download
demo software to test both.