another N00B

[sgtkwol]

...or is it ぬぶ?

[faan-san]

o.o;; wouldn't it be written in katakana, making it?:

ヌブ
nubu

[zengargoyle]

in non-leet speak:

ニュービー newbie
新米 (しんまい) (exp,n) new rice; novice; newbie; tyro; (P);

so maybe stretched out a bit depending on how you pronounce noob.
ヌーブ noobu or ヌービ noobi

[Ongakuka]

Yes I would go with ニュービ　since "Noob" is derived from "Newbie" being the original word. I know there are Katakana words shortened like "Terebi," but lets face it, nobody in Japan is going to walk around saying "Terebishion";)