I lost my install cd for my wireless adapter - NetGear WirelessN 300 USB Adapter WNA3100

Drivers are here.

How to Install WNDA3100 Wireless Adapter on Vista XP

The installation CD contains a driver of the adapter to run the device.If you lost the CD, you can let your computer find the driver online.

Connect your computer to the internet .Plug the USB device to your laptop. Go to device manager , look under network adapter , find Compact Wireless-G USB Network Adapter w/ SpeedBooster, right-click it, hit update driver, there will be a windows update pop-up page, so just hit search automatically.

Yes, you need to install wireless adapter first time.

Here is DRIVERS

http://drivers.softpedia.com/get/NETWORK-CARD/OTHER-NETWORK-CARDS/Linksys-WUSB54GC-Wireless-G-USB-Compact-USB-Network-Adapter-Driver-3010-Vista.shtml
download from here for vista
http://www.linksys.com/servlet/Satellite?c=L_Download_C2&childpagename=US%2FLayout&cid=1115417109934&packedargs=sku%3D1134691790190&pagename=Linksys%2FCommon%2FVisitorWrapper
try both link u get right 1

You can probably find the software on the manufactures web site and download it and run the software from the .exe file. Without knowing the model number of the Wireless Adapter I have no way of looking for you, but the manufacture should be able to provide it via download.

install the driver from the supplied cd and then you will be prompted to connect the adapter, the set up wizard for wireless connection will then be presented when you double click the icon on your desktop

Here is a link to install guides and driver installations for your specific OS.
linky

I lost the Bluetooth class 1 Installation CD, what can i do?

Yes, Here it is for you.

http://www.belkin.com/support/product/?lid=en&pid=F5D8051&scid=221