You don't need networking software at all. All of those items contain all the of the software you need. You can easily connect your Zune and your HT to your wireless, and honestly, that software wouldn't help with doing that.

All you need is your wireless network's name and password. Maaaaybe the type of password (I would bet a lot that it's WPA or WPA2)

I am the Doctor, and THIS... is my SPOON!