Please expand on "no luck". Any error messages? Did system respond in any way at all?
There is nothing wrong with WUBI except for the fact that most of the powerusers giving advice on these forums have no experience with it. Therefore, there are limitations on how much help is available.
Does WIFI work when you run a LiveDVD/USB? You probably already know that Ubuntu can run off of its install DVD or USB, so please locate the medium that you installed it from, boot it up, and try it that way. If WIFI works on LiveDVD, then problem may have something to do with your config files or a corrupted driver.
Also, now time to check your logs. I'm afraid that help here is also constrained due to the sheer size of some logs. They can also contain indentifiable data that you may not wish to have posted on a public forum, so it's best for you to review these carefully and edit if necessary if you wish to post them. Do:immediately after trying to connect WIFI. Also do:
Both logs are huge. You can manage the flow better by piping output through less or even redirecting output to a file that you can review at leisure, i.e.
The last command produces a file on your desktop called syslog_output.txt which you can view with gedit. It is also easier to post such a file on this forum by doing it as an attachment (using paperclip icon at top of posting box--it is considered bad etiquette to post massive files in plain text as this chokes viewers who have limited bandwidth).
dmesg | less
cat /var/log/syslog > ~/Desktop/syslog_output.txt
If you are feeling especially clever, piping through grep removes a lot of irrelevancies, i.e.:
but this may hide relevant info, and when trying to chase down a problem, it is usually best to go through all of the output.
cat /var/log/syslog | grep -i network