Update SQL 2000 Query (converting An Old Access 2k Query To SQL)

Hello, I have the following query in Access 2000 that I need to convert
to SQL 2000:

UPDATE tblShoes, tblBoxes
SET tblShoes.Laces1 = Null
WHERE (((tblShoes.ShoesID)=Int([tblBoxes].[ShoesID])) AND
((tblBoxes.Code8)="A" Or (tblBoxes.Code8)="B"))
WITH OWNERACCESS OPTION;


The ShoesID in the tblShoes table is an autonumber, however the records
in the tblBoxes have the ShoesID converted to text.

This query runs ok in Access, but when I try to run it in the SQL
Server 2000 Query Analizer I get errors because of the comma in the
"UPDATE tblShoes, tblBoxes" part. I only need to update the tblShoes
field named Laces1 to NULL for every record matching the ones in the
tblBoxes that are marked with an "A" or an "B" in the tblBoxes.Code8
field.

Any help would be greatly appreciated.

JR