What do you have written so far? Most everyone here will help you if you at least make an attempt on your own and post your code no matter how mimimal it might be. Also, it might be useful if you could provide an example of the text file you are trying to read. Guessing posting a chunk won't work (display problems), but maybe you have someplace where someone could FTP it from? In any case, it sound like this might require you to read the file in binary mode and then parse as necessary.
Also, if you are using Notepad for an editor you may want to look into trying
UltraEdit -my editor of choice on WIN or as others prefer
EditPlus.
-THRAK
www.polarlava.com