Talvez seja isso o que você está procurando: Nunca combinar, ocultar etiquetas .
- Go to your taskbar properties and set Taskbar Buttons to "Never Combine".
- Launch REGEDIT and navigate to HKEY_CURRENT_USER\ControlPanel\Desktop\WindowMetrics
- Create a new String Value and call it MinWidth.
- Modify the string properties and set the value to 56.
- Restart your computer, and now Windows 7 will never combine icons, but it will also hide the labels.
Eu mesmo não tentei, mas parece promissor