1) There is already a Brazilian Portuguese translation for Messenger Plus! 3
here.
Searching the translation forum before posting would have revealed many posts about this.
Mostlikely Heyder, who did the Brazilian translation, will also do the one for Plus! Live.
2) You can never make a decent translation in less than 2 hours!!
EDIT... sorry misread your post, but anyways, even doing it in one day sounds like a too hasty and not good translation...
3) In case you did, do not use leaked versions of Messenger Plus! (Live)! They are full of bugs, and seriously outdated (that's including the translation file).
/ 
