Protected Worksheet

I have a worksheet that I have not used in several
months. I now need to change some of the data on that
sheet. I password protected the sheet and can not remember
exactly how I typed it in. I have tried but just can not
get the combination right. Is there anyway to delete the
sheet password and reenter it. I know how to do it on the
Work Book but not on the Work Sheet. Can you please help
me?
Thank you,
Gary B.