GROUPING WINDOWS
You can force your taskbar to group windows. Any application that has any number you decide of windows open will automatically cluster, regardless of how full your taskbar is. To set this: Start regedit, expand HKEY_CURRENT_USER and in Software – Microsoft – Windows – CurrentVersion – Explorer - Advanced, and create a REG_DWORD with the name TaskbarGroupSize and the value you want to reach before the windows are clustered together on the taskbar. (This modification requires a logoff to work).