It sounds like you need to disable his mail and calendar conduits for the normal Hotsync. If he's a Windows user, right-click on the Hotsync manager in the system tray, then click on Custom. Edit the "Versamail" and "Calendar (Outlook)" conduits. Set the action to "Do nothing" and make sure the "Set as default" box is checked.
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Jeff Velten
Sprint Treo 755P My apps: 4cast-Blue Nomad Security Suite-Datebk6-Diddlebug-Docs To Go-eReader-FieldPlus-FileZ-Google Maps-HandZipper-Hi-Launcher-KeyCaps 600-magicButton-mLights-MobileClock-mRing-Power Hero-PowerRun-pTunes-Quick News-Shortcut5-Snapper-SplashPhoto-TakePhone-TCPMP-TryDA-Unit2Unit |