Ok. i got the IPhone 3g v2.0.2 and about to jailbreak it. no need to unlock since im with ATT. now my question and seek for help is...where and how do i upload like applications/games/etc. what program should i use? i am running at Windows Vista. so take that into consideration

You should use the Iphone PC suite but you should jailbreak it so that you can install applications other than that from Apple!

well that's one method... the other is using your usb cable (or whichever is your phone to pc cable) and find a program labeled either p2ktools or such. Itl ets you access your phone like any standard drive/file space. For better info (since I don't have an Iphone, but I do have an unlocked flashed ATT MotoRazrv3xx, go to either motostuff.forumcommunity.net(They have an iphone section) or google iphone modding... it should send you to the right places