I always need several Cygwin Windows open so I was very frustrated by Windows 7 only allowing me to open one Cygwin from the Windows 7 Taskbar. This is because once you click on an icon it disappears from the Taskbar! This is different to the behavior of the previous XP or Vista Taskbar and often prompts users to select the Vista Taskbar compatibility. There is fortunately a work around depress the SHIFT button and then click the existing open icon on the taskbar and voila you will spawn a application window!
The Properties Tab is HIDDEN on the Windows 7 Taskbar and had me hating it until I found it. Rightmouse click the relevant Application Icon on the Taskbar then hover over the revealed tab and Right Mouse Click this and there magically is the Properties Tab!!