I'm applying for 2009 myself so keep that in mind when you read my reply.
I'm an international student as well, but I'm finishing my degree here in the US. I would say if the application fee is not that much of a problem for you, give it a try won't hurt. I will try a couple top-5 school myself just for the sake of it, even though my GRE is horrible and my profile isn't really stand out.
Of course, trying this year won't affect you next year. So, I would say just give it a shot. Again, I'm struggling with this myself so my advice won't be really useful, but that's all I could say.
Oh, and if by bad score you mean 800-something then please dismissed what I say. Yes, there are person who confirm that that is a bad score for international, but since I'm below that I won't comment on anything about your score.