It’s not so much time I use Fedora, so I would need help to install drivers and software for a 2.4 & 5ghz wifi antenna …You would really do me a huge favor I hope to find here who has the patience to help me!!!
The first thing to do would be to install the wireless adapter and see if it is recognized. If it is already installed, as I think you indicate with results from lsusb, you could just type iwconfig in a terminal and if it is recognized as a wireless adapter it will likely show up as eth1. If it isn’t, get back with the results of that command, maybe copy/paste the output into your response.
[Edit]: according to Linuxwireless (en:users:drivers [Linux Wireless]) the chipset is supported for 802.11b/n/g on the USB bus. So, that means you should be able to just start network manager (via Settings>Network in Gnome), and set up your wireless as normal.