I bought Asus u36sd notebook last year, when Win8 was in preview, and after official release asus responded to my support question that they'll not release win8 drivers. Interestingly, there are win8 drivers for other models in U36S series (u36sg, u36sj).
I tried win8 nevertheless, but there are some annoyances: after returning from sleep it takes 10-30 sec for wifi to start working, on-screen keyboard shortcuts display (for volume or brightness) is working then stops (problem described here: Windows 8 on ASUS notebook, brightness down does not work), etc.
Drivers from other model in series doesn't help, same problems.
Has anybody configured win8 on u36sd? Where did you find device drivers? Any other recommendations?