Search engine for Excel - do not display results initially

Pete_UK have done an excellent search engine in Excel with this thread - http://www.excelforum.com/excel-gene...readsheet.html

It has everything that I need however, is it possible to make the data invisible until at least one of the filters are filled out?

i was able to trim the formulas a little as I only need one sheet, ie. TW where all my data is located.

I cannot quite interpret the formulas required to make the original fields blank prior to entering the search fields.