important lab test coming up!

well, my parents decided that i have to get drug tested before i go off to college, and they said that if i fail i'm on my own ( i mainly dont want them to be disappointed tho).

I am not entirely sure when it is going to be, but they said it will take place this week at the doctors office. My plan was to try to get a urine sample from a friend every day, and carry it around in my pants (or buy quickfix, but i have to get my hands on it first). This plan might not happen though, because it is a random test


So... i'm going to attempt to dilute. Last time I had a physical my doc told me that the lab tests go back up to 2 months, which is frightening because i've smoked about an eighth of dro every weekend for the past month, and now i have a test around friday. About diluting... How would i go about doing it perfectly WITHOUT it being detected? I read all of the stickies above, but i'm still confused. How much Creatine do i have to take so my piss wont be considered diluted? I was thinking about drinking around 2 gallons of water a day starting tomorrow. Also, i'm about 5'3", 120 pounds (small guy lol). Any advice of some sort would be much appreciated. Please help, i really have to pass this test

Thanks