What about dlookup?
i.e.,
checkString = me.comboMonth.value & otherValue
if isNull(dlookup("[Record]", "tblValues", "[Record] = 'checkString'")) = True then
'add the record since dlookup returns null
else
'warn user that the record value already exists
end if
Avaya 8720\Octel VMX300
"Sanity is a goal, not a guarentee"