Anandtech just did a preview of the MSI Z77A-GD80 Thunderbolt motherboard. They confirmed the Apple TB ACD worked on their PC using an nVidia GTX 680 via Lucid VirtuMVP. 
http://www.anandtech.com/show/5829/a-first-look-at-thunderbolt-on-windows-with-msis-z77agd80/2
http://www.youtube.com/watch?v=ajA0TylSoXo&feature=player_embedded
http://www.anandtech.com/show/5829/a-first-look-at-thunderbolt-on-windows-with-msis-z77agd80/2
http://www.youtube.com/watch?v=ajA0TylSoXo&feature=player_embedded