CL65 FLT CREW HAS WRONG ALTIMETER SET AND DSNDS 1000 FT BELOW ASSIGNED ALT.

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WE WERE BEGINNING OUR DSCNT INTO BURLINGTON; VT; ARPT. WE HAD PICKED UP THE ATIS AND THE FO NOTED THE ALTIMETER SETTING WAS 29.22 INCHES. WE BOTH DISCUSSED THIS AND SAID IT SOUNDED LOWER THAN NORMAL. WE WERE HANDED OFF TO ZBW; I WAS GIVEN AN ALTIMETER SETTING OF 30.22 INCHES; WHICH THE FO READ BACK WITH NO CORRECTION FROM THE CTLR. WE WERE THEN HANDED OFF TO BTV APCH AND WAS GIVEN A DSCNT TO 7000 FT. ATC ASKED US OUR ALT; AND WE RESPONDED 7000 FT. HE THEN ASKED US OUR ALTIMETER SETTING; AND WE STATED 30.22 INCHES. HE THEN CORRECTED US TO SAY IT WAS 29.22 INCHES. WE CORRECTED THE SETTING AND CLBED TO 7000 FT; SINCE DUE TO OUR ERROR ON THE ALTIMETER SETTING; WE WERE ACTUALLY AT 6000 FT. I NORMALLY ALWAYS XCHK THE ATIS ALTIMETER SETTINGS WITH WHAT IS GIVEN BY ATC; BUT UNFORTUNATELY DID NOT DOUBLECHKED WITH THE CTLR WHEN GIVEN A DIFFERENT SETTING. THANKFULLY; THE MISTAKE WAS UNEVENTFUL. I CERTAINLY TAKE RESPONSIBILITY FOR OUR PART IN THE ERROR. IT WOULD HAVE BEEN HELPFUL IF BTV APCH HAS GIVEN US A CURRENT ALTIMETER SETTING ON OUR INITIAL CALL AND SHOULD HAVE NOTICED OUR 1000 FT ALT DIFFERENCE WHEN WE CHKED IN WITH OUR ALT READING. ALSO; IF WE DID READ BACK AN INCORRECT ALTIMETER SETTING WITH ZBW; IT WOULD HAVE BEEN GOOD IF HE CAUGHT IT; BUT WE BOTH BELIEVE WE HEARD 30.22 INCHES FROM ZBW.