DELETE A LOT number of recordset in access database

I use ADO and Vb6 classic.
In a table have 4 fileds.
the last is a Date1 field.(date format)

the records are approx 4.500.xxx(yes milions:()

i need a good sql to speed up deletetation of recordset with *, a where clausole on field Date1, and sql command...
Tks.

note:
the db are in local c:\mydir\