If you are a us based xbox live member (i had to create a new id as my UK Xbox live acc wouldnt work) and you have an existing netflix account then you can stream movies for free from your xbox via a dedicated "channel" on the main xbox 360 screen.
So technically you are paying for your netflix...
make sure your wireless modem is compatible with the xbox wireless adapter - I know I had to spend ages getting mine to sync up as the xbox wireless adapter uses "old" wireless technology
I assume the new adapter will work with the latest wireless technology and rules
Oh and I have all three -...