Creating Jar Files with functioning input files

[appleLove]

I'm using net beans with windows 7. I've created a program, "Bio Game", and it has to read from a txt file. The txt file is in the Bio Game directory and works fine when I'm running it from net beans. However, when I jar it it can no longer find the file. Where does the file need to be to function properly in a jar file?
Thank you

[ra4king]

The text file needs to be in the same directory as the Jar file.