Windows Logo Kit and WHQL for Windows XP

Is it still possible to WHQL-certify drivers for Windows XP, given that it has reached its end of life?

If so, which version of the Windows Logo Kit do I need? Windows Logo Kit 1.6 won't install on my Windows XP Service Pack 3 machine.

In particular, when I try to install Windows Logo Kit 1.6 on Windows XP with Service Pack 3, I'm unable to install any of the components, with the detail text being:

http://pastebin.com/rWRfMiZy

e.g. things like:

   REQUIRED COMPONENT: "EULA" unavailable due to status = Not Installable
      ISSUE: Unsupported OS SKU
         DETAIL: Current OS: Windows XP (Supported OS: Windows Longhorn Server)
      ISSUE: Unsupported CPU Architecture
         DETAIL: Current CPU: x86 (Supported CPU: x64)

Yes, you can still certify hardware for XP (but not systems). WLK 1.6 is the correct version and should install on XP. See this.

What happens when you try to install it?

EDIT: It's been a while since I was involved with WHQL testing, so ignore the information above. That link is wrong. I've done some further investigation and here are the facts:

1. The kit can be installed on and run from a Windows 2003 server only. That is the controller/master box that runs, controls and collects the test info. It also makes the submissions. You need a second test box running the OS you're certifying for. It runs as a slave to the server.

2. The only way to certify for XP is to certify for Vista, 2003 or Win7, and then you are automatically approved for XP.