So you're saying all the data is already imported into Access, and what you want to do is create a new table with just the most recently imported ones?
If so, firstly I'd ask why is this necessary? If you just want to work with the most recent dates, base your form (or report) on a query which selects these. eg, using a query with this criteria under your Date column:
Between Date() AND DateAdd("m",-1,Date())
will give you all records for one month prior to the current date, or:
Between Date() And DateAdd("d",-7,Date())
will give the last weeks records.
If it is really necessary to have a separate table, then use a make table query with the above criteria.
HTH Nigel
Didn't someone say work is supposed to be fun? They didn't have computers then I guess....