Trying to learn new VBA programming code in Excel. Found a _lot_ of good
stuff at MrExcel.com. When I pasted it into my workbook, the code would not
execute. Reading more into it, it looks like I need some sort of upgrade to
'Excel12' (currently have Microsoft Professional 2003). I need help
understanding what this means. Do I need an add-in? Do I need Microsoft 2007?
Please advise.