SAT is the test for entering college
SAT II are only required by California university system. if you are going to any of the univeristy in california, most likely you need to take SAT II
for SAT, you can take as many times as you want, and your best score will be recognized by the college you have applied.
if you got a low score in verbal part, you'd better take TOFEL as well and submit your TOFEL score to the college you have applied.
math is really easy, as long as you finish algebra II in high school, and some geometry. you should be able to get perfect score on math.
for verbal part.. heh, i dont know, cramping for vocabularies ^_^
go to library and search for some SAT books, they are pretty useful.
and good luck on your SAT V ^_^ V