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Microsoft's operating system for handhelds is getting a face-lift and a new name.

The upgrade, based on Windows Pocket PC 2002, will be branded as Windows Mobile 2003 (a name of future Smartphone OS upgrades also).

The latest PDA upgrade is by no means a must-have, but it does deliver assorted tweaks and may also be available as an easy download for some Pocket PC 2002 devices.

We tried Windows Mobile out on Hewlett-Packard's new IPaq H2210, as well as on a wireless-enabled Toshiba E755 with its OS upgraded.

In using the E755, we found it easier to set up a Wi-Fi connection with Windows Mobile than with Pocket PC 2002, though the process still wasn't quite as simple as on Palm's Tungsten C (see our review). Pocket Internet Explorer adds support for XHTML, CSS, HTML 4.0, Jscript 5.5, and other Web standards, which lets you access more Web content. The upgrade rendered popular Web sites legible on the Toshiba's small screen.

With the IPaq H2210, HP launches both the new OS and a compact new design. This moderately priced PDA is slightly smaller than the company's popular IPaq 5450 but larger than the slim, entry-level IPaq 1910. It has a Secure Digital card slot and a removable, rechargeable battery. My one complaint: When you handle the device, you frequently end up muffling the speaker on the back.

Enterprises will appreciate the data security improvements, including a virtual private network client. And all users will benefit from minor datebook and calendar tweaks, such as improved search and time-zone handling.

Microsoft says that Dell, JVC, Panasonic, and Toshiba will offer the new OS. But don't rush to upgrade a 2002 model unless the price is right.

SUMMARY

Hewlett-Packard IPaq H2210 (Preproduction, not rated) Price when reviewed: $399 Current prices (if available)