Jet ODBC Driver for Text files - Permissions Issue

Hi,
I have setup a linked server to a text file uing the MS Jet ODBC driver.
Users that are not sysadmins and local admins on the server that the file
resides get an Jet Initialize error message.
What are the permissions required for SQL Server users to gain access to
this file?
Thanks.Arun,
What happens if you run OPENDATASOURCE (See Books Online) against that
provider for the non-admin user account in Query Analyzer? You could also
enable trace flag 7300.
In Query Analyzer you would type something like:
DBCC TRACEON(7300)
go
SELECT * FROM OpenDataSource( 'Microsoft.Jet.OLEDB.4.0',...
Please provide exact error message.
Regards,
James