problem with swish search module

Hi,

I already install swish module to search my file (pdf,doc,xls,ppt,etc) in linux environment...what i do is after i copy the swish module to my module directory and create a table for the module and setup the path, i try to index it by clicking on "index now!" button at administrator site but there is no result came out.....

just want to ask, what is the proper way to setup the swish module??? ....