Need help with output from form to .txt file

Hi!! When i send data from a form and there is some special characters like ' " \ php seems to add an extra \ before every special character in the transfer from the form to the point when I put the data in the .txt file where i store it. It is a guestbook I'm using the script for so it is a bit anoying. I also have a guestbook where I use MySQL as database and I do not have the same problem there. Esample: I'm sendeing "hello" from the form The result I get in my gb.txt file is \"hello\" Why is that?? Can anyone help me Regards Krister