You can't lose weight the right way in under a week, you may lose about 3-5 pounds if you work really hard (by exercising and dieting), but that's all. Plus, if you did starv yourself - besides gaining more weight - you'd have to continue to starv yourself the entire trip, that way, you did lose some weight... But at a very high cost. Plus, I would expect that you would go with other people, so they might suspect something... Don't worry about your weight though, i'm in the same situation - body wise - as you are, so if it's just for one trip, wieghing a bit more than you would like won't hurt.
~tay~

Hey dont starve ur self I think u should excersise and run or something

Drink a lot of water, exercise, and make sure you eat breakfast. Lay off the carbs in the week you are trying to lose the weight.

It sounds to me like you are already pretty skinny!!! 5 foot 8 145lbs...That's great. I am 5 foot 6 and I weigh about 170lbs and my goal weight is 145. I bet you look great...And if you do want to lose weight..Do it in a healthy way!!!

Teresa