Mewtrice? xD Makes me think of Mewthree.. even though from your avatar, maybe you got the username from regular cats, and not from the Pokemon Mew?
Either way, welcome welcome, Mewtrice!
Hope you have a totally awesome time here, and enjoy whatever areas you're planning to hang out most in. Right now most of the newbies are lurking the Heart Gold/Soul Silver area more than anything. =w=
Anyway, if you have any questions about this place, I'll be happy to answer.
- have fun!