How can i close a windows application that works under vmware in am applescript

Question

Hi there,
On my roof I have a set of solar panels. The daily score of these panels are only visible by using a Windows application.
So I use vmware on my Imac to start Windows 7 on Bootcamp, this all by using a applescript in the automator app.
In the script vmware is starting up and then i made a task in Windows that starts up the specific application after the Windows startup. After a delay of 180 seconds the script fills in a password an gives a return. That works well.
Unfortunately it runs perfect the first tim a and then the second time, the specific application does not start. Only Windows starts up, the rest of the script does not work the right way, exempt closing the vmware, that goes as expected. So I think that the closing command that I give in the script:
tell application "VMware Fusion"
quit
end tell
causes a problem. The closing of the application within Windows is perhaps not done on a proper way.
Therefore I am looking for a way to close that application first and then closing Windows 7 and then VMware.
Thanks in advance for your help.

Answer 1

As a completely different approach, I'd have a look at the raw network traffic with tcpdump or equivalent, and see if I could figure out how to access this data — if you're lucky, it's a fairly standard interface of some sort; HTML queries, possibly. 
Start with a port scan of the controller for the panels (using Network Utility.app in OS X, or another tool), and see what IP ports are open and active.
Is there a vendor and model associated with the controller for the panels?  That might turn up some software other than this Windows application/