http://www.boogieland.org/ReadBlog/Two-Excel-Documents-Side-by-side.aspx I have been using Microsoft Excel for white a while now. One thing I have always been able to do was to open two Excel documents, lay them side-by-side, and leverage date from one to the other. Ever since I started to use Office 2007, I have missed that ability. Well, I found out how to do it yesterday! It's quite easy actually!