i had a problem with it too (note- i'm using redhat, so my situation could be slightly different); i don't know if this will help, but maybe something was wrong when you unpacked the files-
did you do it by running the shell script they provided?
(i had to chmod it to be executable, then just run it- i hadn't realized that it WAS a shell program at all, so that had me stymied at first)
2ndly, setting the path- mine looks sort of like
setenv PATH "${PATH}:.:path_to_jdk_folder"
so maybe you'd need to do that in your .cshrc file
well, i hope you get it to work
~spoongirl