help please... how do I fix this/what do I do with this?

I used disk utility after a software update... After verifying and repairing the disk permissions, I verified the disk.

When I first verified the disk, it prompted me for my admin. password.

I got a little scared, so I verified it again. This time, it didn't ask for my password. It basically said:



*Verifying volume “Hardisk”*
*Checking HFS Plus volume.*
*Checking Extents Overflow file.*
*Checking Catalog file.*
*Checking multi-linked files.*
*Checking Catalog hierarchy.*
*Checking Extended Attributes file.*
*Checking volume bitmap.*
*Checking volume information.*
*Volume Header needs minor repair*
*The volume Hardisk needs to be repaired.*

*Error: The underlying task reported failure on exit*


*1 HFS volume checked*
*Volume needs repair*





I want to click the 'repair disk' button on disk utility but it's always disabled.


How do I fix this? Should I just say goodbye to my beloved iBook of 4 years???


I hope not... This laptop is like an extension of me... **sniff, sniff**


thanks so much!



P.S.
Sorry if this question has been asked before...