How to root my samsung galaxy s vibrand?

i cant root my samsung galaxy s vibrand!! i ve tryied oneclickmethod,it does says tha my phone is rooted and installs superuser permisions!!but when i use titanium backup says tha "root access: FAILED" !! :( so ive tryed to put an update.zip file on the sd card an install it from the recovery mode.BUT tha works only on the 2.1 android :/ and i have 2.2 froyo :/ !!so after i used the Z4 root app it actualy does do something.. :D it makes my phone slow as hell :@!! another app tha i ve tryed to use was the OCLF but that didnt work either!! i saw i fu**ing tyt on youtube from ZDOMAX he says something about the SDK so i ve install it but i cant make it work from te CMD!! :@ i even used oneclickmethod for samsung galaxy s but the only thing tha it does.is to boot to recovery (3e i think ) so i dont know tha else to try!! :/ please help