help with dtd file format
I am running a "Try it Out" from the beginning XML 3rd edition, page 100. I do what the books asks. when i run it with the validator, i get the following error:
Access is denied. Error processing resource 'name4.dtd'. Error processing resource 'file:///C:/Documents and Settings/John...
<!DOCTYPE name PUBLIC "-//Beginning XML//DTD Name Example//EN" "name4.dtd">
my name4.dtd is a txt file because i generate it in notepad. when i download the answers from the book, i notice it is a dtd file format. what can i do