1. Login you magento account. Then you go to System –> Configuration
2. Select Paypal Section.
3. In mechant account section what value you need kindly check and Following setup.
Merchant Country – Select a country merchant, ie the country where the seller’s PayPal account is linked. The countries available for selection are classified according to the reference PayPal worldwide. If the country merchant is not specified, the default value of the Country field located under System→Configuration→General tab→Countries Options tab. Available payment selections below will be amended to reflect only those that are valid for this country.
E-mail address associated with PayPal Merchant Account – Enter the email address used to open a merchant account with PayPal. If not registered with PayPal, enter your email address. If the e-mail with the PayPal Merchant Account field is empty, the method of payment Website Payments Standard is not available and the method Express Checkout is only available if the references are given API. Instant Payment Notifications (IPN) PayPal is not available if the e-mail address to send the AFD and one in the configuration of different merchant account.
4. Select a PayPal Solution panel, select the PayPal payment method that you want in your store. Here some options available which option u need select this.
- Express Checkout
- Website Payments Standard
- Website Payments Pro
- Website Payments Pro Payflow Edition (includes Express Checkout)
- Payflow Pro Gateway
the option what you need you can decide.
5. According to the method (s) you have selected, the panel corresponding payment will be available below. Each is described in more detail in the following paragraphs. Enter the required information for each payment method, PayPal (s).
6. After entering the configuration information required, click [Save Config] button.
Related Link : http://www.magentocommerce.com/knowledge-base/entry/setting-up-paypal-for-your-magento-store/