Thank you chaps - Whoops of joy followed by ashes!! the 'certificate' message no longer appears but still no wireless internet

One slight change is that using ipconfig generates the autoconfig address and the subnet mask. I then tried ipconfig /renew. It activated (I think) but no change.I now have wads of paper covered with indecipherable scrawls but no progress to report. Ain't pooters wunnerful!