Update Table From Excel File

I use sql 2000. I have an excel table containing some fields with the first field named code, the same table with more fields exits in my sql database, the issue:

I want to UPDATE all of the fields in sql-db that matches the ones in the excel file where code of the record matches, in sql it sorta look like this:

update mytable (Fields 2, 3, 4,... till last one /the first is the code field/)
select * from openrowset('Microsoft.Jet.OLEDB.4.0','Excel 8.0;database=C:Book1.xls','select * from [Sheet1$]')
WHERE mytable.code = myexcel.code