Macbook pro won't go past start up screen

i started up my macbook pro today and it opened but couldn't scroll with the trackpad. force quitted (start button) it and then tried to start up again. this time i didn't get past the start up screen (with the apple logo and spinning timer). i then tried to reset pram (cmd+option+p+r), safe mode and a number of other possibilities to no avail. next step was using the instal disc and running disc permissions + repair. again to no avail. i even tried the terminal and tried fixing the disc repair report that it was a invalid sibling link. here's a link to the procedures; http://hints.macworld.com/article.php?story=20070204093925888. i got the message from terminal that the disc is corrupted and i've now run out of tricks/options to get my macbook pro up and running. has anyone here in the community know any other avenues i could travel down. all help of course would be much appreciated. the computer affected is my new 13 inch 2.3 ghz i5 macbook pro.
cheers, Jan

instal disc and running disc permissions + repair.
You need to boot from the install disc and run Disk Utility to verify and if necessary, repair the startup disk.
Insert your install disk and Restart, holding down the "C" key until grey Apple appears.
Go to Installer menu and launch Disk Utility.
(In Mac OS X 10.4 or later, you must select your language first from the installer menu)
Select your HDD (manufacturer ID) in the left panel.
Select First Aid in the Main panel.
(Check S.M.A.R.T Status of HDD at the bottom of right panel. It should say: Verified)
Click Repair Disk on the bottom right.
If DU reports disk does not need repairs quit DU and restart.
If DU reports errors Repair again and again until DU reports disk is repaired.
When you are finished with DU, from the Menu Bar, select Utilities/Startup Manager.
Select your startup disk and click Restart
While you have the Disk Utility window open, look at the bottom of the window. Where you see Capacity and Available. Make sure there is always 15% free space.

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