Well, in the post Les made in the Beta forum about the 4.51 release:
Quote:

KiXtart 2010 4.51 is a minor update with the following fixes & enhancements:

GetFileSize has been enhanced so it can operate on open files.
GetFileTime has been enhanced so it can operate on open files.
Additionally,GetFileTime now supports a 2nd parameter enabling selection of the time to be returned.
Tokenized files can now be protected with a password. To use this option simply specify a password for the file to be protected on the commandline using the '/u' option.
Fixed handling of multiple INCLUDE's of the same INCLUDE file.
Adjusted scope of variables in INCLUDE files to that of the INCLUDing script.
Fixed handling of empty Delimiter parameter by Join & Split.
Added a 5th parameter to AScan enabling selection of the type of match.
Fixed handling of the '~' operator.
Removed '2001' text from exception messages.
Changed 'LongHorn' text to 'Vista'.
Added support for new Windows Versions (Starter Edition, Server R2, etc).
Fixed encryption/decryption of tokenized files on Windows 95.
Removed error event that was erroneously generated by @ONWOW64.
Corrected the way duplicate UDF's are handled: KiXtart now reports an error if it encounters a duplicate UDF



So if you really have to have tokenised scripts for Win9x the answer is to upgrade to 4.51 and give it a try.