Adding a middle click to a Synaptics touch pad

This will allow you to press both track pad buttons simultaneously to produce a middle click.  Great for opening a new tab in your browser!

1. Run the registry editor (regedit)
2. Go to key: HKEY_LOCAL_MACHINE\Software\Synaptics\SynTP\Defaults\
3. Here create a new key as a DWORD and name it as 'HasBothButtonFeature' without the quotes and set the value to 1.
4. Log off and Log on again

stolen from here

You can also enable 2 finger tap or 3 finger tap to middle or right click

This is a per-user registry setting

Depending on your touchpad model, replace TouchPadPS2 with TouchPadSMB2c. You can check Device Manager to figure out which one you need; it will be listed under Mice and other pointing devices.

1. Run the registry editor (regedit)
2. Go to key: HKEY_CURRENT_USER\Software\Synaptics\SynTP\TouchPadPS2\
3. Edit the 2FingerTapAction or 3FingerTapAction
• Change the value to "2" for right click
• Change the value to "4" for middle click
4. Log off and Log on again

If you use the 3 finger tap action, you may need to do the following or the mouse pointer will freeze when you 3 finger tap. It seems to affect the latest versions of the Synaptics driver.

1. Run the registry editor (regedit)
2. Go to key: HKEY_CURRENT_USER\Software\Synaptics\SynTP\TouchPadPS2\ 
3. Edit 3FingerTapPluginID and clear the SynTP string
4. Change the value of 3FingerTapPluginActionID to "0"