I think that you should at least explore this alternative approach:
• synchronize your Palm T|X with the Palm Desktop for Mac OS X using the conduit setting Handheld overwrites Macintosh, thus transferring an intact set of records from your handheld to your Macintosh
• use the Export option of the Palm Desktop to create a vCard file of contacts for later import into the Address Book, and to create a vCal file of events (note that tasks are not exportable in this manner)
• import your vCard file into the Address Book and your vCal file into iCal
• enable synchronization of your Palm device using iSync to interact with the Address Book and iCal
• move from this synchronization option to the Missing Sync for Palm OS, which is a vastly better program than either the Palm Desktop or iSync
More information about the Missing Sync for Palm OS is available here:
http://www.markspace.com/missingsync_palmos.php