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 ...

How to edit a drop-down list in Excel, depending on how you created it

To edit a drop-down list in Excel, you can use a number of tools depending on how you created the list. Here's what you need ...
Ars Technica

Custom validation in Excel using VBA?

I've got an Excel 97 worksheet in which I need to validate some cells. No problem, I'll just use Data->Validate, right? Wrong. The built in validation works well enough as long as the user doesn't ...