Well, I am not that deep into that acp stuff as well, cant help you with that one.
But you dont have to put phrases in the php file ? - To be honest i am not certain about that, but it is enough to put them in the template therefor you could use
{vb

hrase phrasename}
for a phrase which doesnt include html or you could that one
{vb:rawphrase phrasename}
the second one will allow you to use html in your phrase.
btw: german as well, but fair play for the others, may it help somebody else on this english speaking board : )