Read the dat from Excel

I try to read the data from excel using the following
queries

1) SELECT *
FROM OpenDataSource( 'Microsoft.Jet.OLEDB.4.0',
'Data Source="c:\ExcelData.xls";
User ID=Admin;Password=;Extended properties=Excel
8.0')...Sheet1$

the above gives me an error like
OLE DB provider 'Microsoft.Jet.OLEDB.4.0' does not contain
table 'Sheet1$'. The table either does not exist or the
current user does not have permissions on that table.

2) select * FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0',
'Excel 8.0;DATABASE=c:\ExcelData.xls', 'Select * from
[Sheet1$]')
The above gives me an error like
OLE DB provider 'Microsoft.Jet.OLEDB.4.0' reported an
error.
[OLE/DB provider returned message: The Microsoft Jet
database engine could not find the object 'Sheet1$'. Make
sure the object exists and that you spell its name and the
path name correctly.]

...Please give me solution as soon as possible
Waiting for ur reply..Thank u
Madhav

MAdhav