Connect your SD Drain computer to phone Hot Spot or other WiFi network
Swipe in from edge of computer to bring out the Charms Bar
Click on settings in the Charms Bar
Click on the Wireless Bars on the Settings page (it should say "Available")
Click on the name of your network. If using a phone it should be listed in the Hot Spot settings. Most of the time there is only one network listed.
Press the Connect button
If a connection sharing window pops up click "No, don't turn on sharing or connect devices"
When completed it should say "Connected"