[C#] come utilizzare un Service XML ??

[race2]

Salve,
vorrei utilizzare un Service XML con un applicazione in C#, conosco i Web Services ma non conosco questo tipo di servizio, come devo fare per utilizzarlo dalla mia applicazione ?

<service id="129" service_type="free" name="Slidesms" v="1.27" maxsms="10" singlelen="160" sms_divisor="153" maxlen="1000" reset="daily" output_encoding="ACCENT" icon="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" >
<description>
  <info>2 miliardi di SMS gratuiti verso tutto il mondo. Mittente fisso. No captcha.</info>
  <config>
    <required n="1" name="username" default="" desc="Username di registrazione di http://www.slidesms.com/" />
    <required n="2" name="password" default="" desc="Password di registrazione di http://www.slidesms.com/" />
  </config>
</description>
<procedure>
  <page uri="http://www.solinked.com/login.php" method="POST">
    <vars> 
        <var name="username" value="%%username%%" /> 
        <var name="password1" value="%%password%%" /> 
        <var name="redirect" value="" /> 
        <var name="login" value="1" /> 
    </vars>
    <errors> 
        <var errstr="Your username/password is incorrect" errmsg="Login Fallito" /> 
    </errors>
  </page>
  <page uri="http://slidesms.com/solinked/sentsms.php" method="POST">
    <vars> 
        <var name="country" value="00%%intcode%%" /> 
        <var name="mobino" value="00%%intcode%%%%intnum%%" /> 
        <var name="mobimsg" value="%%message%%" /> 
        <var name="submit" value="Server 1" /> 
    </vars>
    <accept> 
        <var acceptstr="Your Message Has Been Sent" /> 
    </accept>
  </page>
</procedure>