Flashing folder with question mark, need more troubleshooting ideas please

I am getting the flashing mac folder with the question mark when trying to boot up. It started the reboot after I (unsuccessfully) tried to remove iTunes 8.2 so I could go back to 8.1. I was following some instructions from another site, but interpreted the code to be segmented and not to be entered as one large command. So I entered this into terminal while iTunes was still running.

"sudo rm -rf /Applications/iTunes.app /System/Library"

I think the system was hanging, so rebooted the computer and that's when this started.

I can't enter single user mode, diskwarrior has rebuilt the directory successfully, but no luck. Any other ideas?

I'm on a 12" Powerbook 1.5GHz with 1.25 GB RAM, Leopard 10.5.7.

Thank you

 

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_2_1 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5H11 Safari/525.20)

It was a very stupid thing to do. I'm seeing now that I essentially deleted my system folder, right? I'd there anything I can do to fix the system? I dot have the restore discs or a leopard disc on hand at the moment.