Teresa,
Go to Start>Settings>ControlPanel>Add/Remove Programs, scroll down until you see Microsoft Internet Explorer 5 & Internet Tools, click the Add/Remove button and select repair.
Or go to Start>Run, type msinfo32, click the Tools menu and select Internet Explorer Repair Tool.
Or type in type in:
rundll32 setupwbv.dll,IE5Maintenance
in the Start>Run box.