TL;DR: Installed Win7 after Mac and now I can't boot from the iATKOS DVD to re-install/access my Mac OS X. Win7 loads right away and the BIOS settings are fine.

So here's my story: my VAIO, with Win Vista on it, went kaput. So I fixed it up and got it working perfectly again but Vista was annoying me incredibly.

So I decided I would stop postponing and install Win7.

But then I thought: Hey, why not Mac OS X? I'm pretty sure someone somewhere already figured out how to put it on a PC. Aaaand then I learned about iATKOS.

I tried installing it without any information, so obviously things went wrong for a whole day. At night I was finally able to run it close-to-perfect on my Sony VAIO. Video was fine and I could use all my resolutions, I was online, USB and card readers were ok. The keyboard didn't work (it worked at one point but after I tried re-installing it stopped and I never got it to work properly again) but that's fine, I'll deal with that later.

Now here's my current problem: after being frustrated this morning with never getting the keyboard to work, I installed Win7 on another partition where I kept my back-up files from Vista.

The install went perfectly well, and after I was done I got EasyBCD to work and everything. I was so very happy.

However, I tried a resolution on Mac that made the whole screen go away and I wasn't able to get to the previous resolution... And so I was furious with life and everything and formatted my Mac partition. Now it's an empty NTFS.

The thing is I was going to re-install Mac OS X on this partition and try to get the keyboard to work, but my Win7 won't let me boot from my DVD anymore. It just loads up, even if I configure the EasyBCD boot screen to appear.

Could anyone help me on making the DVD boot before Windows?

Some unfortunate details on VAIO: F8 for modes to run Windows don't work, my Phoenix BIOS doesn't have a CD/DVD boot option on the boot list, it just magically happens (or used to happen) when you had a CD/DVD on.

I hope someone reads this and assists me. I'd love to get my Mac back and running.

Thank you!

EDIT: Nevermind, the fact that I wasn't able to boot from the DVD was related to a driver issue I was having at Win7 with my DVD reader. It's been solved and after the first reboot I got to load my iATKOS DVD.
All good now!