Hi again all, I'm kinda adding info to this thread I made as the progress goes forward.
The problems described above i have solved useing the following kexts : NatitX1300 and Intel82566MM.


I'm now running 10.5.5. and am about to try going to 10.5.6.
If all goes well, i'll write a complete method to installing Osx86 on your dell e520 ( with matching hardware)