The X Window system has a neat configuration setting called "auto-raise." When this setting's in effect, you don't have to click on a window to bring it to the front of the window stack. Instead, just passing the mouse over a window raises it. This takes a little getting used to, but once you've made the adjustment you'll find that it eliminates a lot of extra mouse clicks.
NT does something similar: it can automatically set the focus to a window when you put the mouse in it, but it won't raise that window to the top of the stack. This setting is off by default to avoid confusing people who haven't been exposed to auto-raise before. To turn it on, set the value of HKCU\Control Panel\Mouse\ActiveWindowTracking to 1. You'll have to log out and log back on before the change takes effect.
Source Paul Robichaux www.microsoft.com/technet/treeview/default.asp?url=/technet/prodtechnol/winntas/maintain/mngntreg/regtwk.asp |