Start>Settings>Control Panel>Network Connections
Double-click on any network connection you have. It may say "Local Area Connection" or "Local Area Connection 2" or even "Wireless Network Connection" or something very similar.
Click on Client Services for NetWare
Click Ok and you are done.
If you have no network connection, then Client Services For Net Ware is not the problem.
If English is not your native language, use whatever language you regularly speak, it can be figured out.