install device driver

I am new here.
Could someone help me to solve my problem?
I have to use USB device. I installed/builds up the driver for it as manufacturer instruction without any problem, and system recognizes the USB device and the program works. After rebooting the PC, USB device no longer recognized and program does not work. In the “Readme” noticed that “Kernel module will be loaded after running the wdreg srcipt upon boot. It is recommended to add this call in your rc.local file.” But I cannot find this file.
Where can I find this?
Or How can I do that the script executed on every boot?

Thank for your help in advance.

Try /etc/init.d/boot.local

Thank your very much hcvv

It works,

You are welcome. Enjoy!