omg super n00bs.
GOOGLE IS YOUR FRIEND DAMMIT
anyways.
1)First of all, its INFECTUS not infectious for gods sakes.
2)it cost 45 euros and is available at
www.hardstore.com
3)if you wanna change region, you gotta downgrade the kernel to an exploitable kernel. so you gonna need the downgrader addon. add another 10 euros, available from the same place.
4)and you need the infectus programmer.
www.infectus.biz/downloads
5) anymore questions, including a tutorial, ask me. i translated that crappy french tut about unbanning to english (with VERY little help from google translator, it just plain sucks)