INSTALLATION OF TREECON IN A VIRTUAL WINDOWS ENVIRONMENT

The most recent Microsoft Windows operating system TREECON will install on, is Windows XP. If you want to install TREECON on Windows 7, you'll have to set up a virtual Windows environment and install the application there.
There are many ways to do this. A few suggestions:

VirtualBox

If you have a copy of Windows XP available (either on CD or as an .iso file), VirtualBox, the virtualization software by Sun/Oracle, can be recommended: http://www.virtualbox.org/
It's quite easy to install, allows you to create a virtual hard drive and install your copy of Windows XP there.
You can then install TreeCon in this environment. VirtualBox allows for a "seamless" mode which integrates virtualized applications into your Windows 7 desktop.

Integrated Virtual Windows XP

If you happen to use Windows 7 Professional, Enterprise or Ultimate, a Windows XP virtualization solution is already included in your installation. Enable it as described on this webpage:
http://technet.microsoft.com/en-us/magazine/ee851564.aspx

Wine

Another, more adventurous, option would be to run the program remotely on a linux server.
TreeCon still seems to run fine using the wine platform. This could then be X-forwarded to a Windows 7 pc using Xming.