Acabo de llegar sería "I just arrived" o "I have just arrived" o "I've just arrived" o "I just got here" -- depende del contexto y si estás en inglaterra o eeuu.

I believe 'acabo de llegar' means 'i have arrived"

hi Gerardo, acabo de llegar = i just come already. but i'm not quite sure.. btw, your name reminds me of a friend of mine, gerard, ''beautiful eyes'' :)