sorry about the current lack of documentation. make sure your db setting in nghost.conf is pointing to a valid dir/file. Other than that, run nscan and nghost and you should be in business.
note also that you can get more/less output from nghost by running nghost -d3.Code:nscan nghost
If you have any more issues, drop into #linuxice on irc.freenode.com and anyone there can assist you live.