Okay thanks for splitting.
Actually, i dunno the problem is.
I have 2 sahred hostings here, CP (old hosting with php4 version) and CPLP (new hosting with php 5.x version).
In this CPLP, clean install wordpress does works fine..
But it doesn't works when I move/migrated files from old hosting.
I usually migrate wordpress by upload files, create database, change database configuration and dump sql.
I was double check my file configuration according to your tutz.. But still no result. My site blank page. Whats wrong?