[G13]

OK i know this may sound stupid but i have had my iphone since last October and i want to jailbreak it(be able to run installer and cydia), i am currently a AT&T customer and am already running firmware 2.0.2, i want to use winpwn 2.5 but was wondering if i jail break it is there anyway apple can tell b/c they have been good to me and i don't want to void my warranty being that this is my 5th iphone just given to me no questions asked. so basically what im asking is if something goes wrong can i just restore it back to normal and take it in, and also is there anything different i have to do since i am on the AT&T network already

[SundayDuffer]

yes..you can always restore it back to factory settings and bring it in to Apple.