I have gotten my n800 dual booting with OS2008. I notice a lot of new features and great things that can be done. I will be updating the How To shortly.
After upgrading from OS2007 to OS2008 I tried to follow my own instructions for dual booting. Unfortunately in that time a lot of files have been moved or changed/renamed. My method for dual booting is no longer valid. I will be reworking it as I get my own unit to dual boot.