ZappTek has released iPDA 4.1, the latest version of its personal information management software for the iPod.

iPDA lets users transfer Word, PDF, Apple Pages, RTF or text documents for reading on the iPod. The software also lets users download RSS feeds, weather forecasts, driving directions and news headlines directly to the iPod.

Additionally, iPDA supports the transfer of information from Entourage, Stickies, Gmail, Mail, Address Book and iCal to the iPod.

The latest version adds full Entourage 2008 support and allows for having both Gmail and local mail messages on your iPod at the same time. Gmail messages now appear in their own Gmail folder on your iPod.

Advanced filtering controls what information gets transferred to the iPod; by date ranges for events, flagged contacts, unread (and/or flagged) messages and tasks based on whether or not they have been completed.

iPDA 4.1 costs $19.95. A trial version is available.