I don't think KiXtart can handle that value period. There was some UDF or Script I thought I saw where someone does try to do something to trick KiX into it but not sure where that was, maybe someone else knows.
QWORD Value REG_QWORD
Data represented by a number that is a 64-bit integer. This data is displayed in Registry Editor as a Binary Value and was introduced in Windows 2000.
Not sure if these values are correct but they are listed on the Windows 7 forum.
REG_DWORD - 32-bit number
The range of integer values that can be stored in 32 bits is 0 through 4,294,967,295. Hence, a processor with 32-bit memory addresses can directly access 4 GB of byte-addressable memory.
REG_QWORD - 64-bit number
A 64-bit register can store 2^64 (2 to 64th power) = 18,446,744,073,709,551,616 different values.