scusami non capisco

ora ti post il codice

codice:
<form action="http://gigabyte4:8080/sito/servlet/logininterface" method="post" name="login" target="_blank">
    <fieldset>
     <legend class="testo1">Login</legend>
     
       <div align="center">
         <label for="username" class="voceHomeLogin">Username:</label>
         <input name="w_username" type="text" class="testoLogin" id="j_username2" tabindex="1" maxlength="16" >

         <label for="password" class="voceHomeLogin">Password:</label>
           <input name="w_password" type="password" class="testoLogin" id="j_password2" tabindex="2" />

           <input name="w_switch" type="hidden" value="1"/> 
           <input type="submit" onClick="CheckLogin()" name="login" value="Accedi" tabindex="3"/>
           <input type="submit" name="registra" value="Vuoi registrarti?" tabindex="4"/>
           <input type="submit" name="libero" value="Accesso Libero" tabindex="5"/>
		
       </div>
     </fieldset>
    </form>
come e dove devo fare?