Run time Error Problem in Microsoft Excel Sheet.

Hi dear,
I am doing work in Microsoft Excel and run a macro that copies worksheets and then places the worksheets into the same workbook from which they originated. When i do this, I receive an error message that resembles one of the following error messages:

Microsoft Visual Basic
Run-time error '1004':
Select method of Ranges class failed
Continue End Debug Help
I'm really confused about this error. Now please remove my confusion by giving me perfect solutions. Thanks.
