[Chimera-users] where is the chimera directory on my imac?

Dear Chimera Folks, I am familiar with adding experimental features to Chimera installations on linux and pc. I'd like to do the same for the working installation of Chimera on my new intel dual-core iMac, but I cannot find the share folder that I should put them into. I'm using UCSF Chimera beta version 1 build 2309 (2006/11/08), platform: darwin, windowing system:X11. After I installed the software following instructions I moved the icon that was on the desktop to the applications folder, as suggested. When I use the finder search I cannot find any folders named chimera or chimera.app. Yet they must be there somewhere! But where? thanks in advance for your help... Cathy