PayPal has a link where you can apply. However, not all countries have the option. For example, I cannot get one here in Canada.
HP won't allow me to post the actual URL, so take out the spaces and replace (dot) with an actual period:
www (dot) paypal (dot) com/ca/cgi-bin/webscr?cmd=xpt/Marketing/account/DCIntro-outside
Hope that Helps!