...Between DateSerial(Year(Date())-2,Month(Date())-1,1)
And DateSerial(Year(Date()),Month(Date()),1-1))
AND (([macs-US].COMPCODE) Like "rsg*")
AND (([macs-US].LEVEL)<>"0") )
UNION ALL
SELECT [macs-UK].LOGGEDBY, [macs-UK].ALRTDATE, [macs-UK].COMPCODE, [macs-UK].LEVEL, [macs-UK].MODNUM
FROM...