If you really want to stay anonyme, surf via Anonymizer. You can access websites without revealing them your Identity. You can send Email without letting anybody know who you are.
Did you know that the export version of Netscape Navigator (the version sold outside US) has only 40bit Encryption built in. This is due to American Crpytographic Export Law. But if you want to strengthen your browser, try Fortify and patch your Netscape.
The NSA is the US secret service agency. These guys operate quite powerful computers. Probably the most powerful ones on the globe. But check out your own if you find out anything about them. Actually knowbody really knows who they are and what they really do.
If you live in the EU, maybe this article about Privacy is of interes to you:
EU Directive