How to repair a disk without installation CD

Hey everyone,
My macbook has been acting up and has been spitting out CDs/DVDs lately... I checked my disk and it said:
This disk needs to be repaired. Start up your computer with anpther disk (such as your Mac OS X installation disc), and then use Disk Utility to repair this disk.
Only there's one problem... I don't know where my installation CD is. I also have Snow Leopard if that helps.
Any suggestions would be appreciated! Thanks.

Does single user mode work? (cmd-s at startup)
If it will boot that far, try: fsck -fy
You really need that installation CD... just in case you need to reinstall. : )

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ali ead wrote:
I dont understand u
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How to repair a disk without installation CD

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