new to this, need help with add ons

which ones you trying to add? planes? scenery panels

retail addons?

i am trying to add helicopters and planes

if its third party ones that you have downloaded, then its easy.

unzip the dl into a temporary folder, then click on the folder and look until you see the name of the aircraft....

ie...

BA-737-300 <--- copy this into your aircraft folder. under your FS9 folder
|
| Panels
| Gauges
|Sound

BearsdenRed Is correct, here is a more detailed description of how to install.
First check the read-me that comes with the aircraft.

You need WinZip to unzip the folders.
You can get the trial one at WinZip it's the best you can use and the trial will last for years.

I think I know what you are asking but I try answering two ways.
One, If you cannot find your downloads to "unzip" them, send them to "My Computer", "My Briefcase" or even to "Desktop".
You can enter them from any of those areas.
I download to a folder that I have in "My Briefcase" it's just handy for me that way.
Installing.
Ok,
I do it a more complicated way, but it works.
Make certain you have a full aircraft not just textures.

Unzip the file and now it's in it's own little window, you work from there. Dump the jpgs.

dblc=double-click

dblc on "My Computer"
dblc on The "C" drive icon.
dblc on "Program files"
dblc on "Microsoft Games".
dblc on "Flight Simulator.

Now you have all the folders laid out in front of you.
Follow the directions in the read-me that came with the aircraft.
Put the gauges in the gauge folder.
Put the effects in the effects folder.
Put the aircraft in the aircraft folder; make certain it has the correct name of the plane.

Now go crash land like I do.