dir="test/read.cgi/tech/1059913111/"
sockput "POST"+dir+"HTTP/1.0\n\n"
sockput "Referer:http://pc2.2ch.net/test/read.cgi/tech/\n"
sockput "User-Agent:Mona-Test\n"
sockput "sockput "bbs=tech&key=1059913111&time=1&submit=書き込む&FROM=名前&mail=sage&MESSAGE=テスト"

何が足りない？