Restore Mac OS X 10.4.11 without installation disc?

Here is my situation, and any amount of help would be greatly appreciated.

A few days ago, my MacBook slid off the couch and fell on the floor. It fell flat, nothing was damaged outside and the screen was fine. But when I turned on my MacBook, it wouldn't boot past the grey screen. I tried to Safe Boot, and nothing. I even tried to start it up holding-down Option + Command + R + P , when I finally got the ever familiar blinking folder with "?" in the middle.

Now before I take it to the Apple store to have it looked at not knowing the range of the cost, I was wondering if there was ANY way to restore my MacBook without the installation discs (since I lost them during a big move...like an idiot).

Thanks for your time. Hope this isn't too ridiculous of a request, or possible but ending-up too pricey.