To make things easier maybe, go to the Desktop, right click on it, choose personalize, and select the Desktop icons you would like to show, including Network and Control Panel. Then, check things out in Control Panel > Network and Sharing. Be sure your network is shown as Private. Run the troubleshooter. See what things look like when you go to the Change advanced sharing settings link in Network and Sharing. If I am a little vague, then please forgive as I am on a Mac far away from my Windows machine. To facilitate things, show your network icon in the taskbar notification area.