Hi,
You can use lists.asmx webservice where you can use oledb connection to import excel data into list. Please see the below blog for code:
http://salaudeen.blogspot.in/2012/06/read-from-excel-import-to-sharepoint.html
You can also use office API to read excel file and copy data into list but it would be require visual studio to write code for custom timer job. If you happy with that then may got with this.
Hope it could help
Hemendra: "Yesterday is just a memory,Tomorrow we may never see"
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