Snow breeze is the one to use for 4.3. That goes on windows pc. If u have a Mac, u need to use pawnage tool for 4.3 jailbreak. Keep in mind both are a Tethered jailbreak only. Which sux IMO. That means u have to boot into tethered state every time. If ur iPad reboots for any reason, u r stuck until u get bck to ur pc and rejailbreak again. The jailbreak doesn't stick.
Now untethered jailbreak, which hasn't released for 4.3 yet but will soon, means u do it one time. One time and ur jail broke until u update iOS again. iPad can reboot a million times n still be jail broken n no need for pc anymore ;-). It's coming really soon so u should just wait for the best option, untethered, like I am on 4.2.1 ;-)P