Welcome to the board..
Conditional formatting should do the trick.
Steps will vary depending on version of Excel.
In XL2003
Highlight Column E (only the used rows though, not the ENTIRE column).
Click Format - Conditional Formatting
Select "Value is"
Select "Between"
Put a 1 in the first box
In the second box, put
=TODAY()
Click Format
Apply a Yellow Fill color
Click OK
Click OK
Hope that helps