What should i tell apple so they can replace my iphone 3g and get a new one my warranty is about to expiresoon?

Personal experience (it worked over four times with my 3G alone): Setup email accounts for both MobileMe and Exchange (if no MobileMe, at least Exchange. Exchange is the key). Make sure that PUSH is on. Show them how fast the battery rips through and make sure you're dressed decently; tell them your business is really getting affected by this because you're loosing orders and clients by not having a phone for hours sometimes. As it is, you're now charging your phone about 4 times DAILY. Play DUMB. Ask how you can go about replacing the battery. When they see you're not in it for a new phone, you're golden. HINT: It helps if you have an attractive look on and good figure (and are female). Bonus points for blonde hair. What's the problem? You're a male? Not a good enough actor? Do yourself a favor & get your girlfriend to act ditsy & do it for you! Works EVERY time!

Run over it wit a car or something. i think thats under the warranty.

What kind of warranty? if it covers theft then report it stolen , if it covers failure make it fail. In addition , new 3gs are failing, they get hot and Apple will have recall just like Dell 2 years ago with exploding batteries.