Disable Radius 802.1x because your wireless network won't have a Radius server.
WEP (Wired Equivalent Privacy) was the original method of securing wireless networks, but it is easily broken. Only use it if the PC's wireless adapter doesn't support WPA.
WPA (WiFi Protected Access) is much more secure. The setting is often WPA-PSK (Pre-Shared Key) with TKIP encryption.
WPA2 is a next generation and more secure implementation of WPA.