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I'm not sure about a Boot Camp "can't verify volume" error message, but I'd like more information about what you did when you "checked permissions and such." Repairing the startup disk appropriately requires that you boot from your OS X disc and run Disk Utility from the Tools menu - while booted into the OS X disc. This is critical: Disk Utility can't do anything to the structure of the startup disk when you're running OS X from that disk, so you have to boot from the install disc. Usually this fixes any problems Boot Camp has with running and partitioning the drive.
Please post the specific error Boot Camp generates, and specifically what you did to try to correct the problem-we can work from that to help you out.