With a little effort it is possible to install the application on Windows.
Why ? Just to use the same tool to your files on Windows and Linux.
What you need to do is install PyGTK. For more information read http://www.pygtk.org/downloads.html
1. Install gtk+-win32-runtime and libglade-win32
You can download them from: http://sourceforge.net/project/showfiles.php?group_id=98754
Install gtk+-win32-runtime first,then unzip libglade-win32 in GTK folder (C:\GTK)
2. Install Python
You can download Python installer from http://www.python.org/download/.
I recommend 2.5 version since this is the one I tested (http://www.python.org/download/releases/2.5.4/).
3. Install PyGTK
From http://www.pygtk.org/downloads.html you need download and install
4. Install rsync for windows
Actually you need to install cwRsync (http://www.rsync.net/resources/howto/windows_rsync.html).
Install it the default location: C:\Program Files\cwRsync
5. Install YADSync
Just decompress YADSync sources somewhere (C:\YADSync)
6. Make a link (windows link) to YADSync\gnome\app.py
Make a link that run C:\YADSync\gnome\app.py with pythonw.exe in C:\YADSync\gnome folder.
This is it. To run the application just execute this link.