What your USB drive's formats actually mean (and how to change between them)

A USB drive can support several different types of file formats, depending on your needs. Here's what those formats mean and ...
The New York Times

Opening the Mysterious Winmail.dat

Q. I sometimes receive e-mail messages with a “winmail.dat” file attached that I cannot open. Why does this happen, and what can I do to fix it? A. The winmail.dat file usually appears because various ...
CNET

Mac OS X 10.4.1: Spotlight: Tips for faster searches, problems with .DAT files; more

Spotlight: Choking on Finder.DAT files? We've received scattered reports from readers indicating that Mac OS X 10.4.x's Spotlight may have problems indexing and searching for Finder.DAT files -- data ...
PC World

Why Do E-Mail Messages Come With Winmail.dat Files?

We’ve all seen mysterious .dat file attachments in our inboxes from time to time. In most cases the .dat attachment originates in Microsoft Outlook, which produces outgoing messages using a slightly ...