You can download the latest 2.0 version of the project from https://github.com/subsonic/SubSonic-2.0, after you build it the sonic.exe will be in SubSonic\SubCommander\bin\Debug.
Then I've just got a little script file
del /q "DAL\*.*"
"..\..\ExternalResources\lib\sonic.exe" generate /out "DAL"
pause
Is that enough to get you on track?