1) You must create an account at Google Mail.
A) Go to this group's home page.
B) Then click "join this group" on right hand side of page.
C) Then click "Create an account now" on right hand side of page.
D) Then follow the instructions from there.
2) Once you've created an account simply click the "join this group"
button.
3) Now all you have to do is click "reply to author" when you want to
comment on the posts.
ENJOY!