Mon,

Select: Format>Conditional Formatting. The default for Condition 1 is "Cell Value Is". There is a dropdown arrow in that cell. When you click on the drop down, the other option is "Formula Is". Select that and the Formula Bar will appear to the right. Click on the formula bar and type = then select cell A7 (it will appear in your formula bar automatically with the $'s) then type ="Mileage" after $A$7.

Remember that in order for the conditional format to apply to all the cells you want, you need to select them all before going to Format>Conditional Formatting.

Hope this clears it up for you.

Regards,

Steve