the chance to get financial aids is relatively small during the first year, at least, it is the case for 2007, and if you can survive, then you can get financial aids in the 2nd year and later, survive means, the grades of every course is over b-(this is not that difficult), the average gpa is above 3.14, and pass the two qualify exam, then it is guarenteed that you can get financial aids in the second year, while , if you can not meet one the above reqirements, the chance to get financial aids is very large, but not guarenteed,
impossible to get financial aid in first year if it is an ad (it seems BU need money!)
and it will be very tough, both mentally and physically, for those first year students without financial aid.