Thanks Jeff - found it - I'll give one or both of those solutions a try (replace double quote with single quote - or possibly change to ^ and change to quote if that won't work).
Here is the formula that Todd posted in case anyone else is curious: SUB(IMP$[3],quo+quo,quo).
Dawn's solution was replace the "" in the original file with ^ and the use this formaul in VI:
SUB({CI_Item.ItemCode$}, ""^"", CHR(34)