Provided nothing else has been done to the database, and/or the PC, you may
be able to have one of the commercial "rescue" companies recover your
database. Or you could use your most recent backup copy and write off the
data entry between when that backup was made and the spike...
Like Jeff Boyce and John Vinson, I am not too hopeful about this but it may
be worth trying this on a *copy* of your mdb file:
ACC2000: How to Recover a Table Deleted from a Database
at: http://support.microsoft.com/default.aspx?id=209874