For years now I've been talking to customers who want a way to supress the unsigned driver warning. This is a particular problem if you're selling an innovative device for which Windows doesn't have a logo program. The DQS program is the answer to this problem. Details about the DQS program have recently been published here. It is important enough information that I'm adding it to my link list. DQS testing will be fully supported in the WDK at Beta 2.