I can not connect my Surface RT to my Comcast network. The network shows up on the RT, but won't connect. I haven't used my RT for months and can't get the updates without a connection. Can they be downloaded from MS (where?) and put on a USB stick and transferred to the RT? Do you think it is something else? My RT connected when I had a different router, but I now must use Comcast's router since I added phone service. I don't think I can make adjustments to the Comcast router.