Python

import webbrowser
import urllib2

login_user = raw_input('Please enter your username. ')
login_pass = raw_input('Please enter your password. ')
login_url  = 'http://www.hackforums.net/member.php?action=login'
login_usock = urllib2.urlopen(login_url)
login_data = login_usock.read()
login_usock.close()
login_html = login_data
login_html = login_html.replace("<input type=\"text\" class=\"textbox\" name=\"username\" size=\"25\" maxlength=\"25\" style=\"width: 200px;\" value=\"\" />", "<input type=\"text\" class=\"textbox\" name=\"username\" size=\"25\" maxlength=\"25\" style=\"width: 200px;\" value=\"" + login_user + "\" />")
login_html = login_html.replace("<input type=\"password\" class=\"textbox\" name=\"password\" size=\"25\" style=\"width: 200px;\" value=\"\" />", "<input type=\"password\" class=\"textbox\" name=\"password\" size=\"25\" style=\"width: 200px;\" value=\"" + login_pass + "\" />")
print login_html



thread_id  = raw_input('Please enter the thread id, found in the url of the thread. ')

thread_url = 'http://www.hackforums.net/showthread.php?tid=' + thread_id
thread_usock = urllib2.urlopen(thread_url)
thread_data = thread_usock.read()
thread_usock.close()

thread_html = thread_data
print thread_html
raw_input('Press ENTER to exit!')