Hello
i need to send information to newsgroup
I found working script wchich is sending message to usenet http://shat.net/php/web2mail2news/

now i need to know how to change topic of post.
for example
first message topic: tips
second message topic: tips 1310
third message topic: tips 1312
and so on

of course every message must be under the tree of first one

i tried to use

New subject (WAS: old subject)

in subject line ,but without luck