PDA's

Palm pilots will stop syncing after the Office 2007 installation. HotSync manager 6.1.0 will not work with Outlook 2007. Hotsync 7.0 will need to be downloaded and installed from the Palm web site.

Excel

Because Excel 2007 has more columns than previous versions of Excel, if you select an entire row and perform an action on it, that change will be lost when you save your document in the older Excel format.

Access

• In Access 2007, you can open and work with the records in the old Microsoft Access format.  However, you cannot make structural changes such as when you create new fields, create tables, save queries, etc. that will require you to re-save the database.
• Transitioning Your Existing Access Applications to Access 2007