In that case, please follow sourceforge's procedures to take over the project:
http://sourceforge.net/apps/trac/sourceforge/wiki/Abandoned%20Project%20Takeovers
The upstream forums are still active and some people have written
about bugs there:
http://sourceforge.net/projects/zthread/forums/forum/22488
You might want to enable the bug tracker, switch to a more sane VCS
(like git) and otherwise revive the project.