A bit short on detail.
Example only....
=IF(A1="boss","dimwit","yorkiefired")
To use the Wizard, click on the fx and select "logical" from the categories.
Select IF and OK.
Enter the options in the appropriate boxes.
Use the collapse buttons to go to cell references.
Text must have the quotemarks around it.
Numbers can be entered without quotes.
If you need more, post back with specifics.
Gord Dibben Excel MVP