For Each File Enumerator

Hi,

I am new to SSIS.I am learning through the Tutorials.
I am trying to execute the same steps mentioned in Lesson3.but I am getting the following warning,
THe For Each File Enumerator is Empty.The For Each File enumerator did not find any files that matched the file pattern,or specified directory was empty.
When I checked the Enumerator Configuraiton it is empty,so I browsed to the following location
c:\programfiles\MicrosoftSqlServer\90\Samples\Integration Services\Tutorial\Sample Data
and try to run the package again .
but I am getting the same warning and I once again checked the Enumerator Configuration, it is empty.
Please let me know what to do in this case.

Thanks in Advance,
Radha.