It's fairly certain that netlink32.exe is viruses or spyware. Backup your PC and remove this file, or perform a free scan of your PC to be certain.

netlink32 and it's associated process, Backdoor.W32.Agent, are known to be a type of adware. Before making any changes to your PC, you should backup your files, or create a Windows system restore point, so you don't lose any important data.

A good way to ensure that you only remove spyware files is to use Computer Associates's free scan of your PC.

Since netlink32.exe is active on your PC, the chances that more viruses or spyware are still on your computer are pretty high. Get a free scan of your PC.