This mod takes the start button from the early Longhorn builds and puts it into Windows XP's explorer. The start button shown below is the only modification to explorer.
1. extract the archive containing replacer.cmd and the modded explorer
2. Locate the original explorer.exe in x:\Windows
3. Open replacer.cmd, drag said original explorer.exe into replacer.cmd, press enter
4. Drag the new explorer.exe file from the archive in (_XPmodded for x86 and XP_x64_modded for x64), press enter
5. Reboot and enjoy
Installing service packs (including