Conditional Formatting IF not empty

Question

How can I conditionally format a cell so that it turns grey if it is not blank?

I attempted to use "not equal," but it was unsuccessful.

At work, I run Windows XP and Windows Office 2003. The following feature is not visible to me:

What I have tried so far:

Answer 1

 Use Conditional formatting with the option "Formula Is". One possible formula is:

=NOT(ISBLANK($B1))