Can excel formulas look for a word within a sentence?

I have some data that contains a column which is Notes entered by CSR's. I would like to flag certain rows of data if the CSR puts in the notes that a customer has promised to fax something for instance. the Notes colum first contains the date stamp then the CSR name then then 1-2 sentences about the phone call. I would like to flag the cell if the word "Fax" appears anywhere in that cell. Can Excel do this with a basic formula?

Assuming the note is in A1, use this formula:

=IF(ISNUMBER(SEARCH("fax",A1)),"YES","NO")

Using XL2003 you can also
use
Edit - replace - find what : fax
replace with : fax and format this line
Then click Replace all
All cells containing the word "fax" will be highlighted

HTH