Import Excel to DataTable

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=911149&SiteID=1
http://support.microsoft.com/kb/815142/en-us
http://msdn2.microsoft.com/en-us/library/ms178685.aspx
http://support.microsoft.com/kb/306572/
http://samples.gotdotnet.com/quickstart/aspplus/doc/configformat.aspx
http://support.microsoft.com/kb/316675/en-us http://msdn.microsoft.com/library/default.asp?url=/library/en-