You cannot, but to tell you the truth, Neopets only asks for your neohome address just to be like "real banks". They don't regard your neohome address or your job in the future, only how much you put in to start your bank account so they know how much interest to give you, your gender so they know whether to say "Sir" or "Ma'am", and that's pretty much all. You can leave it blank if you want to. I've been on neopets for quite some time -- going on four years now -- and so I know that the site doesn't even store the information in your bank account.