Example form HTML code which might work
<form id="guest_form" action=" http://bbsserver.createaforum.com/index.php?action=login2 method="post" accept-charset="ISO-8859-1">
<div class="info">Welcome, <strong>Guest</strong>. Please <a href=" http://bbsserver.createaforum.com/index.php?action=login>login</a> or <a href=" http://bbsserver.createaforum.com/index.php?action=register">register</a>.<br>Did you miss your <a href="http://support.createaforum.com/index.php?action=activate;PHPSESSID=0b0fe07449634924e13cf8cfee5115de">activation email</a>?</div>
<input name="user" size="10" class="input_text" type="text">
<input name="passwrd" size="10" class="input_password" type="password">
<select name="cookielength">
<option value="60">1 Hour</option>
<option value="1440">1 Day</option>
<option value="10080">1 Week</option>
<option value="43200">1 Month</option>
<option value="-1" selected="selected">Forever</option>
</select>
<input value="Login" class="button_submit" type="submit"><br>
<div class="info">Login with username, password and session length</div>
<input name="hash_passwrd" value="" type="hidden">
</form>