VB string help?

I wanna know how to add a new line to a string; how to add to a string (instead of just replacing) and how to add the same string a set amount of times, e.g. if I wanted to put lololololol over and over for some reason, how would I add "ol" x amount of times? Thanks :)

s = s & String$("lo", 256)

oh, the bad memories...