How do I save files on Macbook with crashed OS?
One option would be to used your other Macbook Pro to create a Linux boot CD or USB drive, then boot your Macbook from that. By default Ubuntu has read access to HFS+ formatted drives so that should allow you to read your files. Assuming the drive responds.

Some resources:


How to burn a DVD on OS X
How to create a bootable USB stick on OS X
How do I boot the live CD on a Macbook Pro?