I did the setup for the Harmony today and setup didn't find anything using Microsoft MCE Media Center in brand so i tried Microsoft as brand and MCE Media Center as serial #, setup took me to another page and asked me what I was trying to control, I selected media PC and then setup took me to another page and wanted me to select what the buttons did,If it is the Inteset that you purchased, the description specifically states that the receiver works with "Media Center and MCE related apps". So in the Harmony Setup tool, you simply select "Microsoft MCE Media Center" (or similar). Note: there may be more than one command set listed for Microsoft MCE; if so, try them all until you find one that works.
If you purchased the Dell remote/receiver combination, you proceed the same as above, and select "Microsoft MCE Media Center" in the Harmony Setup tool.
-- from CyberSimian in the UK
I backed out of that and entered Microsoft as brand and MCE RC6 as serial #, setup took me to another page and asked me what I was trying to control, I selected media PC and then setup took me to another page and wanted me to select what the buttons did again, so I backed up and entered Desktop PC and it saved the device hopefully that is the right device, won't really know until I receive the Dell remote/receiver.