When I received my 420 on Wed I was missing a remote as well. Before I ordered I had looked at the official Dell 420 Reviewer's Guide http://direct2dell.com/files/folders/test_folder/entry32145.aspx
which shows, as standard this really nice preminum remote on pg 23. It may have the part # 0RY496 - I found this number on the Dell Community notes on the XPS 2010 missing remote issue that some people had. I called support last night, and after about 30 mins or so, they have ordered this part for me at no charge. I'm somewhat concerned that it may or may not contain the actual USB receiver with it, but I guess I find out when it arrives around the end of the month.
Anyone have this particular remote with that part # and did it include the USB receiver? It is made by Gyration which is sold at Circuit City, etc for about $100 but lacks the LCD display as shown in the Dell book.
Thanks