Hello All, I bought a NC last week and it came with 1.1 out of the box. I rooted it following one of the tutorials on You Tube and everything works perfectly. At the time I wasn't aware of backing up my stock ROM or installing custom ROMs, etc. using CWR. After a decent amount of time on this forum and some others over the last few days, I think I would like to install CWR. However, I am trying to wrap my head around the hows of installing it, using it, etc., all hopefully without bricking my NC. Apologies in advance, but I just haven't been able to find answers to my questions so I thought I would post a few of them now. I GREATLY appreciate any insight, tips and general assistance. With that said, now that I have 1.1 rooted, what's the best way to install CWR? 1) Do I want to create a bootable CWR on mSD or have it installed on the NC itself using ROM manager? What's the difference between the two options? 2) Before installing a custom ROM, I imagine I want to backup the working root ROM? 3) Faceman's new post references 'a bootable CWR mSD v188.8.131.52 (ext3 & ext4 compatible)'. What does ext3 & ext4 reference. Again, thanks for the assistance. Apologies if I have missed a 'How To" post, but I have done my best to find it.