Hi,
I have a textbox called txtStartLotNumber on a form called
frmLotNumber.

That's all that's on the form, along with an OK and Cancel button.

When user enters into textbox, and clicks OK, in need to verify the
entry, before the rest of the code in the OK button executes.

The entry has to be:
- A six digit number
OR
-A five digit number, preceeded by an 'M', or an 'S', or a 'R'

If those conditions are met, the sub continues, If not, a message
indicating an 'Invalid Entry' displays, then cycles back (a loop?) to
the frmLotNumber to reenter a valid lot number.


As usual, Thanks for any help!
-Steve