Links :
https://www.paypal.com/lk
http://en.wikipedia.org/wiki/PayPal

more reliable online auction websites

http://www.buyincoins.com
http://www.ebay.com
http://www.amazon.com/
http://www.newegg.com/
http://www.dealextreme.com/

Open command prompt and type

You can redirect it to a text file by adding >c:'openports.txt to the command, if you want to:

You can also change "listening" to "established" to see what ports your computer actually communicates with: