Modify VBA Code to Compare Variable-Length Columns From Two Workbooks

Looking to compare two columns from two different workbooks and return matches, but it seems the code I got from the MS site assumes each column has the same number of rows, while my rows vary. How can I modify this code to allow for variable-length columns? I eventually want it to return the cell directly to the right of the workbook being compared to (Up.Load.Master_20081110.01.xls), but first things first - I need to allow for varying columns. Any suggestions?

From the Microsoft site:

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Thanks for any help

In which column are the matching values in Up.Load.Master_20081110.01.xls file?

Its better you attach the samples, so we can test it.

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The Workbooks collection does not use the full path for the index, only the file name. That's why you get a subscript out of range. Try this.

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