Hello AlishaM,
Basically you need to start with configuration of the Linux OS for automation with ZAP-fiX, to do this please follow these steps:
1. You will need to install a VNC server;
To do so, launch the terminal (Make sure your user has permissions to install packages)
2. Type "apt-get install tightvncserver", wait until the installation is complete.
3. When done, execute the command "vncserver". if executed for the first time, you will be required to define a password. write down the X desktop number (It indicates the last digit of the VNC server’s port number).
4. Now you can execute QTP and Zap-fix for the required automation.
Please contact Zap if you need more help.
Thanks,
Sasha