You want to run chkdsk /r (which is a little more comprehensive than chkdsk /f). You enter the command from a command line (such as Start - Run) and the system will reboot and run from outside the Windows Interface. Therefor, there is no need to run it from safe mode.
As the above post says, MS reverted to checkdisk for XP - there is no scandisk.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS