Payments.PayPalStandard - Setup instructions update

Hi,
The configuration text on top of the Payments.PayPalStandard plugin may benefit from a little update
(due to redesign of the paypal website)

I propose :

1. Log in to your PayPal account.
2. Click the "Profile" menu, and select "Profile and Settings".
3. Click "My Selling Tools" then click Update for "Website Preferences" in the "Selling Online" column.
4. Under Auto Return for Website Payments, click the On radio button.
5. For the Return URL, enter the URL on your site that will receive the transaction ID posted by PayPal after a customer payment (http://www.yourStore.com/Plugins/PaymentPayPalStandard/PDTHandler).
6. Under Payment Data Transfer, click the On radio button.
7. Click Save.
8. return to "Website Preferences"
9. Scroll down to the "Payment Data Transfer (optional)" section of the page to view your PDT identity token.

For IPN :

The second way is to confugure your paypal account to activate this service; follow these steps:
1. Log in to your PayPal account.
2. Click the "Profile" menu, and select "Profile and Settings".
3. Click "My Selling Tools" and Choose Update for "Instant payment notifications" in the "Getting paid and managing risks" column.
4. Select 'Receive IPN messages' (Enabled) and enter the URL of your IPN handler (http://www.yourStore.com/Plugins/PaymentPayPalStandard/IPNHandler).
5. Click Save, and you should get a message that you have successfully activated IPN.