Windows Vista build 5231 (winmain)

Same as 5231.winmain_idx3.051004-2120 but it's x86. It is an earlier compile and it introduced WMP 11, and IE was revamped, as well as Network Connections, including a new tray icon for the network. A new volume control app is added, allowing the volume of each app to be set independently. An early version of Reliability Monitor is added.