Build a Drop down Excel spread sheet with various inputs

I require a very simple excel spreadsheet to be build. It has just 5 Columns and in those columns will be a drop down list of fixed inputs from which one can choose. e.g Country -> Australia, France, Italy, USA, this will then go onto to allow choice of other inputs in second column etc. This is a simple task that should be able to built very quickly by a proficient Excel user. It must look professional.