validating the first two columns of a excel file when importing?

Hi everyone,

I have an excel file in the presentation server which has to be uploaded into prog.First the user adds a additonal column in the excel file.

For example the excel file is intially in this way,

col1 col2 col3 col4 col5

Now the user adds one more column 'colx' in the excel sheet and he will upload it into the prog.Before uploading programatically we have to validate that the first two columns of the excel file should be col1 colx(the newly added one).How can I do it?

Any suggestions please?

Thank you.