I go to my Tekkit folder > Mods, and look for the NEI file. It is not there, the NEI plugins are there. I would like to update NEI to the newest one.
If you know, tell me if you can update NEI in Tekkit.
Also any fixes for the IC2 bug in Tekkit 3.1.3
http://imageshack.us/photo/my-images/69/neidis.png/