Multiple ID Field Find/Replace

[em1]

I'd appreciate the ability to use the Find and Replace tool and "Find" on multiple fields as if it were a join. Currently, in order to flag clients (who are repeated across the data set) with some records that I've already isolated that meet certain criteria, I have to create a compound key for the client and the flag and then use Find/Replace on the compound key. I'd rather use a Find/Replace where multiple columns match (ex: Client, Product, Month, Shipping Depot A, etc.) and skip the compound key step if possible.