OK, UPnP is a communication protocol. To view pictures, listen to music, or watch videos that are stored on your PC, you need a UPnP-compliant media adapter - the remote itself doesn't pass any data, but just acts as a control for the data passing from PC to media adapter. You can view pictures from your PC on the 9800i's screen if you have the right UPnP software installed on the computer, but that's about it. I don't think the 9800i is compatible with standard Pronto config files, so the files on this page may not help, but the 9800i does support learning so that you can teach it the 990's commands.

Basically, it sounds to me like 9800i users can buy a media adapter that support UPnP and make use of a nifty interface on the remote for selecting data to play or view. Devices of this type seem a bit rare - Philips' Streamium is one such device. Of course, folks who don't have the 9800i can achieve much the same thing with media players such as the Slim Devices Squeezebox or the Roku Labs Soundbridge or Photobridge.