Not yet. That's one thing I'm working on. I need to figure out how it decides to come up with the GMT value from the timezone key. But the timezone info I'm using is accurate with the DST update. There's still a seperate key for the DST though.
If you could try setting [HKEY_LOCAL_MACHINE\Software\Microsoft\Clock\HomeDS T to 1 and let me know if that fixes then I can add it for next version.
If it doesn't, then please let me know what setting->system->clock & alarms has for your GMT and what it should have, thanks
New Feature:
I've added an "Import Cab" button to the "Files & Shortcuts" section. If you have a cab file that uses a _setup.xml, you can try importing it. The program will extract it to Kitchen\Tools\Cabname.tmp\*, check for a _setup.xml, parse it, and try to give you a list of files and proper destinations as well as registry entries from the cab.
Anything highlighted in yellow on the "Files to Import" list are files with subdirectories or locations other than \Windows or \Windows\Start Menu. You may want to look at those and change things like themes to use one folder, etc. Mousing over a filename will give you the orignial filename it had in the cab, like FLASH00~.001. Mousing over a shortcut's name will give you the path it's linked to.
It's not perfect, but it will give most people a great starting point for converting cabs to OEMs (if not do it all for them). 
Download here