need some help...

i have been having a big problem with my iTunes for a while now. Whenever I try to open the program (first time after install) the Lisencing agreement or some sort of agreement pops up then quickly goes away before i can even read the title of the window, let alone click on anything. I have tried everything that i can think of. I have re installed the program a number of times to no solution. Anyone have any helpful advice? The program itself wont even load...