I personally recommend UnDupe from Stevens Creek Software. It is a utility that removes duplicates from the Palm and can be set to remove them from Outlook as well. http://www.stevenscreek.com/palm/undupe.html

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Milly Staples [MVP - Outlook]
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After furious head scratching, TK asked:
| I use my Outlook calendar at the office and synchronize my palm pilot
| (Zire 31) with it. This is a great way to get my business andpersonal
| appointments on one calendar, but it causes duplicate entries in both
| Outlook and onthe PDA.. Is there a way to avoid the duplicate
| entries?