You can insert blanks rows above or below another in Excel, and you can even add them between each row that has data.
To create data bars in Excel, select your cells and then choose data bars from Conditional Formatting.
How-To Geek on MSN
Excel's Custom Data Validation: A Trick You Didn't Know You Needed
If you've used data validation in Excel before, you probably selected the relevant cells, clicked "Data Validation" in the Data tab on the ribbon, and created the rule in the Data Validation dialog ...
Results that may be inaccessible to you are currently showing.
Hide inaccessible results