No wifi after installing updates

[AZ]

After looking at some of the messages posted on this forum it's apparent that others are having the same problem as me. After installing the LL updates & rebooting we are losing our wifi. Some people are reinstalling LL. My questions are: Is there a way to just remove the updates without having to reinstall LL? What is the best way to reinstall LL, is it with the CD, or is there a better way? Thanks.

AZ