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.

This build will BSoD during the setup on QEMU and VMWare. Using Windows Virtual PC or VMWare 6.0 or older compatibility is recommended.