I'm sorry that there seems to be lack of home rental services here in Milwaukee/Waukesha County area. As a lifetime resident, my observation is that most "homes" are owner occupied. We see a few more homes being rented out as people who can't get the home Sold as quickly as they liked, but that is not a majority.
Are you being moved here with a Relocation package from your Company? They may have access to a rental program service.I have posted rental requests on our Metro MLS message board to other agents, as they may know of a home-owner that wishes a short-term rental. Most of the rentals here are apartments.
I will check on some other options and follow this post and advise if I see any.