Disabling settings, Run…………..

I have a small network of 8 computers.they are all windows 98.what I want to do is to remove settins and run command from the start menu and windows explorer.I also want to remove and disable network neighborhood from the desktop and win explorer.I am thinking of making the network safe.

Ideas to this are welcomed.I want to also know if I can do more with security in windows 98.

thank you.