oh and your not going to be able to concentrate on shit trying to play MW3 btw... and you'll just end up fucking bouncing around the map getting pwned...
just sayin... you should try a low dose of 300mg of dxm first just to see how "dissociative" it is... then you can up it to 700 mg...
700mg and less you should be just fine and should have nothing to worry about...
anything more than that is just a wasted trip... and to be serious... it can be very dangerous with regards to that drug...
if you want to "trip" youre better off just eating mushrooms as it is a much more safe, you cannot overdose, and it is a much more pleasing effect... just sayin...
since you say you have never done it b4... just know that when the dxm kicks in it will last a long time so RELAX BE CALM DONT PANIC its just how the drug makes you "feel" and it will pass... sit back relax listen to some music and you can even watch a movie if you can follow the plotline so watch something you have seen b4... stargate the movie, not the series... is always a good "trip movie" to watch... so enjoy the experience...