BoxWave has released a USB desktop cradle for the HP iPAQ rx1950. It will let you synchronize and charge your rx1950 and supports USB 2.0. It also comes with an A/C adapter cable and a USB cable (letting you charge your iPAQ without the A/C cable but more slowly).
The BoxWave iPAQ rx1950 Desktop Cradle is available for $32.95 USD (Web special) directly from BoxWave.
If you’re looking for a cradle for your rx1950, now you have a couple of options as HP also offers one.