Just to add a very little bit to the good advice Rob gave you. If you do reinstall Pronto Edit, make sure you reboot the computer after the new install. When trying to download to the remote, wake it up first. Just tap the screen or push the backlight button.
You might also want to try Tonto. The communications are much improved over any of the Philips software. It's available here:
[Link: giantlaser.com].
Jim L