Is it possible to Install cyanogenmod on Galaxy S2 I have galaxy S2 which I bought two years and still is in its Prime Condition with no scratches or smudges at all. So Im planning to install New Version of Android OS on it.

I like cyanogenmod So I want to install this on my phone. I have never flashed ROM on it. It still got the same Stock version of Gingerbread 2.3.3

And yes my phone is root-ed

Mobile info

Model No = GT-I9100
Android Version = 2.3.3
Kernel Version = 2.6.35.7-I9100JPKH1
Build No = Gingerbread JPKH1 


Can someone please tell me what are the pre-requisites to install cyanogenmod

Thanks
Yes - you can install Cyanogenmod for the i9100 S2. 

Get the CyanogenMod (nightly if you feel adventurous or stick with the stable since you're new at this) from http://download.cyanogenmod.org/?device=i9100

Also, you'll need to flash the appropriate gApps package from http://goo.im/gapps

I highly recommend you read through the major posts of this thread on XDA

Also, learn how to use CWM or TWRP recovery - Youtube has a number of videos. See how its done, before attempting to do it yourself, and of course - please back up your data to the cloud or to your PC / laptop / external SD card before attempting this and if possible, perform a NANDROID backup so you can revert back to how things were should the unexpected occur and you need to recover.