>I need to replace all occurances of the word "vendor" with the word "manufacturer". Each record has two memo fields and I have to find/replace these words wherever they occur in either of these fields. Any easy way to do this? Thanks.

REPLACE ALL <i>memo field name</i> WITH STRTRAN(<i>memo field name</i>, "vendor", "manufacturer")

You should repeat this with "Vendor", "Manufacturer" as well to account for capitalization.