Macro for "Text to Column" operation in Excel 2010

Hi

I have a attached a file showing part of a spreadsheet with numbers appearing as text. I can use the "Text to Column" operation to convert the text to numbers, but it allows me to do so column by column. When I have a number of columns it's a bit of a pain.

Is there code that can automatically do the conversion by column or the entire spreadsheet in one "go".?

Thanks

Patish