Very similar comment on OPs duplicate thread http://www.linuxquestions.org/questions/showthread.php?p=2804600#post2804600
The problem is I know absolutely nothing about Linux.
Read the link(s) provided and you will learn something about linux.
Part of the design philosophy is that users are bright and desire to learn. Ignorance is discouraged and willful ignorance is frowned upon.
why should I worry about possibly needing to install?
You may not need ndiswrapper if your card has open source drivers. Increasingly, there are closed-source or partly-open drivers for linux. It may not be obvious to a newcomer if this is the case and it is much preferable to use linux drivers in linux than attempt to interface the windows drivers. There is a lot of experience here. Tell us which card you have and we can tell you.
However, most wireless cards will only work with the windows driver. ndiswrapper is a program designed to interface the driver with the linux kernel, just as windows has software to interface the driver with the windows kernel.
Your next post should show us that you have read through the link.