[Pharo-project] setting Windows Application Title Bar

These past few days I've had several images open at the same time to compare the operation of different versions, and found I quickly lost track of exactly which image was which. There is a lot of empty space on application title bar after "Pharo 1.3" where I'd like to display the directory where pharo.exe was started from. Can this be changed on the fly from the image? or a less attractive alternative... how do I query the pharo.exe location from the Workspace, and/or update some text on the background on startup. cheers, Ben