you need to put this code
<form action="https://www.e-gold.com/sci_asp/payments.asp" method="POST">
<input type="hidden" name="PAYEE_ACCOUNT" value="1234567">
<input type="hidden" name="PAYEE_NAME" value="your-domain.com">
<input type="hidden" name="PAYMENT_AMOUNT" value="[cost]">
<input type="hidden" name="PAYMENT_UNITS" value="1">
<input type="hidden" name="PAYMENT_METAL_ID" value="1">
<input type="hidden" name="PAYMENT_ID" value="[user]">
<input type="hidden" name="STATUS_URL" value="http://your-domain.com/thanks.php">
<input type="hidden" name="PAYMENT_URL" value="http://your-domain.com/done.php">
<input type="hidden" name="PAYMENT_URL_METHOD" value="POST">
<input type="hidden" name="NOPAYMENT_URL" value="http://your-domain.com/members/upgrade.php">
<input type="hidden" name="NOPAYMENT_URL_METHOD" value="LINK">
<input type='hidden' name='BAGGAGE_FIELDS' value='memo'>
<input type='hidden' name='memo' value='[description]'>
<input type="hidden" name="SUGGESTED_MEMO" value="[description]">
<input name="submit" type="image" src="http://www.e-gold.com/gif/paywith.gif" alt="Pay with e-gold">
</form>
into the merchants section (replace your domain.com by your own domain)
go to your
www.site.com/control and will find it