1: You are going to be connecting your device to your computer using the USB cable. You must connect your device directly to your computer, not through a USB hub or other intermediate device. Prepare for this step but do NOT plug the touchpad into the computer just yet.
2: Now the tricky part. Hold the Volume Up button on the device and insert the USB cable into your computer, and the other end into your touchpad. After the large USB symbol appears on your touchpad screen, let go of the Volume Up button. If you see the HP logo instead of the large USB symbol, you may have let go of the Volume Up button prematurely. If this occurred , wait until your device boots up, shut down your device and then repeat step
3: Windows will find your device and may offer to install two different drivers.
4: When asked to install drivers of OMAP, select No, not at this time.
5: When asked to install drivers for Palm Novacom (bootie), select Yes and let the drivers install. This may take a while. Once the drivers have been installed, the Next button will become available in webOS Doctor.
6: Click Next.
7: Do not disconnect your device from the computer during the update process.
8: When the Reset Complete screen appears, click Done.
9: Wait a few minutes for your device to reset.
10: You're done!
Some troubleshooting if things aren't working correctly (taken straight from palm):
If the Next button remains unavailable, it may be because your device was disconnected from your computer during the driver installation process. In this circumstance, Windows cannot communicate with your device to install the drivers until you clear the driver installation state.