@Sotitomo: I created a little program which resizes Lightworks. I have only done very light testing, as I don't use a multi-monitor setup, but it seems to work. You can download it at
www.mediafire.com/download.php?te8d7y5tq57bdu9. Included in the ZIP is the program, instructions, positions file, and the original AHK code. Let me know if it works for you.
Update 7/12/12
I just completed a significant update to the LWMultiMon program. The old link is above just in case anyone still wanted it, while the new version can be found here. Enjoy!