missykittie81

if 9.1 is freezing while LW is starting up, try sharing only one or two small files at first.

If it is crashing when you try to click the menus, you'll need to look for extension conflicts (FaxStF was one that gave problems a while back, for example).

Really though, the best bet is to upgrade your iMac to OS X if possible. Java for OS 9 is really outdated, and Apple stopped supporting it quite a while ago.