I rarely take my MBP out of the flat but today I have taken it to the office. I get BT OpenZone access for free so thought I would use that and it seems to work well but I really want some sort of app that will auto-login through the captive portal rather than having to enter the username/ password everytime. On my iPhone I use the BT Wifi app which works really well but is there some similar alternative for the MBP?