[2005] Can't install my program

Hello, just released a program on my website called "Html Editor".
Note * It is freeware

I have been getting complaints that when people try to install my program with the default Visual Basic .NET installer that comes with publishing the program that it displays an error saying

something like:

Quote:

Your computer does not suceed the requirements cannot install.
Requirements:
Visual Basic or Visual Studio something....

What's wrong?
Maybe i accidently set a requirement?

My previous programs worked perfectly.