Thanks for replying zephyroth.

I moved a kext from the Extensions directory which appeared to causing the problem. Cant remember the what it was exactly something like applendes .... I dont know I cant remember. Anyway it seems to have got a bit further and its picked up my graphics card but then say...

DirectoryService: Couldnt find root user. Sleeping and trying again.
DirectoryService: Couldnt find root user. Sleeping and trying again.
DirectoryService: Couldnt find root user. Sleeping and trying again.
DirectoryService: Couldnt find root user. Sleeping and trying again.
.....

Maybe this is the applendes.... Maybe it stands for directory service. I dont know.

Anyway I have repaired permissions. Allow when I done this and re-run it, it says something else is wrong with the filesystem!!!!

I havent recreated the kextcache. Dont know how to do that. Will have a look on the net.