Uninstalling Device drivers

I am trying to uninstall PCMCIA device drivers. I tried using the sample
code in DDK\src\network\netcfg.

I used the command : snetcfg -u PCMCIA<pnp_id>. This does not seem to uninstall
and remove the registry entries. What modifications do I have to do to
achieve this?

Thanks,

…Ram</pnp_id>