Hi, thanks for your response :-)

> (1) sc->ndis_sysctl_mib is the top-level mib number?
Yes, I enter it in, and get the mib number like so:
	/* Create the sysctl tree. */
	sysctl_createv(&sc->sysctllog, 0, NULL, &ndis_node,
				CTLFLAG_READWRITE, CTLTYPE_NODE,
				sc->ndis_dev->dv_xname, NULL, NULL, 0,
				NULL, 0, CTL_CREATE, CTL_EOL);

	/* Store the number of the ndis mib */
	sc->ndis_sysctl_mib = ndis_node->sysctl_num;

> (2) do you have more than one node under sc->ndis_sysctl_mib?
>
Yes, I enter a whole bunch of nodes from the Windows .inf file (these are
supposed to be registry keys) like this (inside a loop)

		sysctl_createv(&sc->sysctllog, 0, NULL, NULL,
			CTLFLAG_READWRITE|CTLFLAG_OWNDESC, CTLTYPE_STRING,
		        vals->nc_cfgkey, vals->nc_cfgdesc, NULL,
                        0, vals->nc_val, strlen(vals->nc_val),
                        ndis_node->sysctl_num, CTL_CREATE, CTL_EOL);

> (3) when you get back the response from sysctl_dispatch(), you'll have
> an array of nodes which you'll have to look through to find the one
> you want.

Actuially I changed the way I am looking for the keys (when I later need
to look them up based on their name.  I'm using sysctl_locate() to find
the root of the tree that I stash all these nodes in, and from there I
just itterate through the child field in the "struct sysctlnode" like so:

	mib[0] = sc->ndis_sysctl_mib;

	sysctl_lock(curlwp, NULL, 0);
		error = sysctl_locate(curlwp, &mib[0], 1, &pnode, NULL);

		numcld  = pnode->sysctl_csize;
		ndiscld = pnode->sysctl_child;

		/* find the node whose name is keystr */
		for(i=0; i < numcld; i++) {
			if(strcmp(keystr, ndiscld->sysctl_name) == 0) {
				/* Found it */
				break;
			}
			ndiscld++;
		}
	sysctl_unlock(curlwp);

This seems to work OK, but I'm not sure if it will cause subtle problems,
as I'm reading directly from the sysctlnode structure.

> the problem is probably that you're doing a query but only providing
> sysctl the space for one node under sc->ndis_sysctl_mib in the
> response.

Yea, I actuially thoght this might be the problem too, so I tried calling
sysctl_dispatch with an array of nodes (not the exact number that I
created though).  Maybe I should go back and do it this way if there is a
problem with directly accessing the node.

Anyway thanks again for your help.  Let me know if you think I'm still
doing something wrong.  Also in case your interested here's some links to
my sources on the web:
-I add the nodes in ndis_create_sysctls() and ndis_add_sysctls() in the
following file:
http://cvs.sourceforge.net/viewcvs.py/netbsd-soc/ndis/sys/compat/ndis/kern_ndis.c?rev=1.14&view=log
-I look them up again in NdisReadConfiguration() (gets called by the
actual Windows binary driver) in this file:
http://cvs.sourceforge.net/viewcvs.py/netbsd-soc/ndis/sys/compat/ndis/subr_ndis.c?rev=1.9&view=log

thanks again.