See if there is any good advice in here:
http://icwdm.org/wildlife/skunk/skunkrelease.asp
We have skunks in the neighborhood and if it weren't against the law in CA, I would have a descented skunk as a pet (for real) but it is against the law.
Our dogs are too stupid to stop attaching skunks, so we deal with the onslaught of the stench quite regularly. The one time when they actually KILLED one in the front yard, the smell was so bad, that it took over an hour to change to the "normal" skunk smell. OMG it was HORRIBLE. I did learn a lesson though: Wear gloves when bathing dogs - at 2 in the morning I was a little befuddled and washed their faces without gloves.