I was hoping to test mine more extensively before making it public, but since I didn't receive any feedback on it for almost two months I guess keeping it under wraps is sort of pointless now:
http://rapidshare.com/files/374421045/Win311FDBv2.7z
I used a different approach, though, going for the compatibility and only installing additional software if it's clearly necessary.
This isn't bundled with DOSBox, mind you. Extract the package to whatever you mount as your C drive in DOSBox,
with the exception of the root of your system drive. Once you mount the directory it's in, run Windows.bat and you're good to go.
This is an experimental fix that should solve problems with games requiring a Borland DPMI server:
http://www.mediafire.com/?7waa47ate460ndp
Unpack to the Windows directory (the one from the above package, not the one where your computer's actual operating system is installed), optionally also the game directory and see if it works.