how to prevent norton removing my applications

Hi, I am a developer selling e-books,  the user need to install my e-book reader.  They can download the setup file from my website, or can install it using a CD I provided.   Both of these are killed by norton.

For downloading  the setup.exe on line,  norton killed the setup.exe

 

for installing using a CD, the setup.exe running normally, but after setup.exe is done,  the setup program will automatically launch my reader.exe file, but then notron removed the reader.exe.

 

Please let me know how I can prevent norton killing my apps in both of the sceinarioes, I need to lauch my product ASAP.

 

Thx.

 

John