Hello and welcome to LinuxQuestions,
My BT4 installation worked like a charm out of the box so I can only assume that it had something to do with the commands you ran. It's a fact that on first install the wicd and wicd-client don't start up, you'll have to do that manually and next configure it. But I assume from your post that you already figured that part out.
So, main question, what commands did you run and/or what config files did you change.
If nothing is important on the laptop then most likely a fresh re-install will be the fastest and cleanest way to repair your installation if you really cannot remember what you did.
You could try to see if your wireless card is detected/changed.
Check if your wireless card is listed.
to see if it has wireless extensions enabled and if the NIC name hasn't changed.
Post your results.