The right way to do it is to check out CVSROOT (the directory), edit the file, and then do a cvs commit
of the changed modules file. CVS knows to then check out
it's control files (+ whatever files are specified in the checkoutlist file, also in the CVSROOT directory).
On openacs, the avail file needs to have you permissioned
for it (I think you aren't currently). I can do it if you like. Also, did you add requires for the things that do use
workflow?