based on your posts i'm not clear if you do have a BB Data plan. Are you able to get to the internet? if so you have one. If not you have standard cell phone service and internet access is not part of the the ability when connected to a Blackberry. So if you do have one, read this and configure your home router and when you are at home it should work. when you leave it will drop.
KB13340-Configure a WLAN profile