i think there is a trick for windows
i went to stick it onto a windows box tonight and it was running 0% cpu (like you are saying)
i remember using some command line switch on another box a long time ago, but i looked for it on the other box and i had deleted it
it is on some website or something , but i am pretty sure i remember using a .bat file to include some switch to tell it to use my client.cfg instead of the registry entry , something like that. my memory is a bit flaky