Macbook Pro intel core duo, will not boot to anything.

Greetings, I am currently having issues with my MacBook Pro. I get the flashing folder with the ?, but I can't boot to any of the startup utilities. I have tried all that I have read about on other posts, such as, trying to boot with the C key held down (it just gets to the folder ?), booting to disk utility didn't work ( held down keys and it went to the folder ?), I also tried getting to the hardware test, by holding D and having the applications disk in. And still everything I try gets me to the flashing folder ?. Also I do have the CD's that came with the laptop and tried to install from the mas os install CD and still get to the flashing folder ?. The reason it started doing this was because of this...... I had boot camp installed and was running dual boot with windows 7, then I had deleted the mac osx on the drive so I would only be using windows 7. I wanted to reformat the drive after this, but had a hard time finding out a way to actually do this, as the MacBook unlike PC's, doesn't have any BIOS, and at that time didn't know all the key commands to use at startup. So I downloaded a program from the net that can run at windows start and delete the HD before the computer fully boots windows 7. So after I deleted the HD I could not install any program or start any of the mac utilities at startup, and I did the PRAM reset, still everything that I try it gets me to the flashing folder ?, in the end. Could I have deleted all of the startup utilities when I wiped the HD? If so how can I get these back on my MacBook pro if I can't get the MacBook pro to read any files or start up utilities? Any help would be greatly appreciated.

UPDATE: I found a way to download firmware, I thought that it could be the reason I get the flashing folder with ?, because maybe I somehow damaged the firmware on my computer when I did the reformat. Alas I followed the directions to re-install the firmware and still I get to the same flashing folder. I used FirmwareRestorationCD1.4 I think it is the one I needed for my model, MacBook Pro 15" intel core 2 duo, and comes with osx 10.5 leopard I think, the OSX CD is stamped 2008 for 15" MacBook Pro. I can't check the properties of my MacBook because it has no programs on it, but this is what I think it is from memory and deduction. Well now I guess I have to ask the question, is the firmware the programs installed such as disk utility, and recovery mode? I need to read more I guess, and also I thought I needed to take the 1.4 off the end of the FirmwareRestorationCD in order for it to work, but the instructions for making and using the firmware CD is a bit vague. Another factor in this to make things more difficult, is that this computer is my second computer and it's a PC laptop, so I used a program download from the net to write .dmg files to disk, it's called Transmac, could this be another fault in my creation of the CD? I am out of ideas again as to what I need to do to get mac OSX back on my computer, I am still a bit new to the way macs work, so I could definatley use some advice. thanks.

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Macbook Pro intel core duo, will not boot to anything.

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