The client side with DOS/Windows9x style operating systems seems to be no problem, since there are many PCMCIA cards with drivers for Netware available. For Linux connections see the mars_nwe package. Also the Caldera Linux distribtion is well known for its Novell support.
I hadn't time to build a Netware server on a laptop yet and couldn't check whether there are network connections possible (PCMCIA driver for Netware server).