It should be a simple matter of changing thbda.inf as follows
QUOTE
; Bandwidth setting for MCE channel scan - For DVB-T
; Normal
HKR,"DriverData","FixedBandwidth",0x00010001, 0x00,0x00,0x00,0x00
; Fixed as VHF 7MHz, UHF 8MHz
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x01,0x00,0x00,0x00
; Fixed as 6 MHz
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x06,0x00,0x00,0x00
; Fixed as 7 MHz
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x07,0x00,0x00,0x00
; Fixed as 8 MHz
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x08,0x00,0x00,0x00
to
QUOTE
; Bandwidth setting for MCE channel scan - For DVB-T
; Normal
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x00,0x00,0x00,0x00
; Fixed as VHF 7MHz, UHF 8MHz
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x01,0x00,0x00,0x00
; Fixed as 6 MHz
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x06,0x00,0x00,0x00
; Fixed as 7 MHz
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x07,0x00,0x00,0x00
; Fixed as 8 MHz
HKR,"DriverData","FixedBandwidth",0x00010001, 0x08,0x00,0x00,0x00
before you install them