Hi there!
i have a iphone 2g and im not to sure if i wanna jailbreak or not cause the bottom row part of the screen doesn't work(the part thats like above the phone app.)....
im afraid to jailbreak it cause i think i would jack it up or some thing like that, so can someone please tell me what are the probabilities that my phone will mess up??

and more on the screen problem it doesn't work at all whenever i touch it i have no clue what it is!

Its very unlikely to make it any worse.