If what is a paid program?
We do not distribute paid programs here.
VNC is a standard protocol, offered by many applications programs.
Do you have access to a web search program?
Something like Google?
search for "VNC server name_of_os_here"
Your top hits will probably include:
https://www.realvnc.com/en/connect/d...d/vnc/windows/
https://www.tightvnc.com/download.php
http://tigervnc.org/
You should also google some descriptions of what VNC is and what it is used for.
That will give you some required background (like a start at what you are trying to do).
Plus, learning to use web search engines is almost a requirement these days.
(and it would be nice if you learned a little bit about how to use this forum site's posting - like click "help" and read it)
= = = =
Have you jail broken your Kindle?
If not, that would be one reason you have a grayed out UYK.
The other common reason, the package you are trying to install is not built for your model Kindle.
All packages in a file with the name format of update_*.bin are "model locked" to a specific model or models.