title: How to process excel file in vb.net without office installed
body: <p>I am fairly new to VB.net and never used it for processing Office files.
  Right now I have to look at Excel file and send some emails based on the data in the cells. I do not need to write anything to these files.
  So far I have read quite a bit about PIAs and so far it looks that I have to design my application for particular Office version? 
  Is there a way to write the application which could handle files created by different versions of MS Excel?
  I would like to be able to process these files without Office being installed on the computer at all, is there any way to do it?</p>