Question : can't uninstall network adapter

i am trying to get rid of spyware on a computer and and it has several network adapters when i try to unistall them i get failed to uninstall the device. the device may be required to boot up the computer

Answer : can't uninstall network adapter

You fail to mention what OS you're using, but I'm assuming it's some kind of windows since you posted in Microsoft Hardware.

In XP, do Start->Run, msinfo32 [Enter]
expand Components, expand Network, click on Adapter
In the right pane will be listed all the network adapters, along with their 'Index' number.

Before using Registry Editor, see http://support.microsoft.com/kb/322756/

Open Registry Editor, go to and expand

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002bE10318}

All the network adapters are listed there, and the Key number of those entries correspond to the Index numbers listed in msinfo32.
If you want to remove the adapter with index# 3, in Registry Editor right click "0003" in the tree (left pane) and choose Delete.