Is this the way you reply to something in a thread? I didn't see anything on the actual thread page where you could click "reply."

Er, no. It's the menu in the lower right corner of the box around each individual post. "Printer-friendly page | Edit | Reply | Reply With Quote | Top"

(As a non-administrative user, you're only going to see "Edit" on your own posts.)

Under almost all conditions, you want "Reply With Quote", though for replying to longer posts you're going to want to do some trimming.

--G.
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Benjamin D. Hutchins, Co-Founder, Editor-in-Chief, & Forum Admin
Eyrie Productions, Unlimited http://www.eyrie-productions.com/
Ceterum censeo Carthaginem esse delendam.