Both the Mozilla suite and Firebird web browser natively block popups.
http://mozilla.org
If for some dimented reason you prefer to use Internet Explorer consider installing the
http://StumbleUpon.com toolbar; it also gives you access to an amazing community with quality url stumbling. (available also to Mozilla, Firebird, Netscape, on windows, mac, linux, and BSD)
Alternately install one of these to FREE local proxy filters:
http://proxomitron.info
or
http://privoxy.com
The former is best suited to power users. The latter is merely 300k under windows and has a flavor for every popular OS on the planet, but not as easily tweakable.
To "secure" email install a flavor of Disruptor:
http://BestSpamSoftware.com
It uses ALL the greatest antispam technologies in one, easy to use interface. (easy
regular expression builder for geeks)
OL for outlook
PI for outlook express or any POP3/IMAP client
both keep spiffy statistics with optional graphs of your spam
After installing one of the mozilla web browsers grab yourself some extensions:
firebird:
http://texturizer.net/firebird/extensions/
mozilla suite:
http://www.mozdev.org/logs/top50.html
edit: it seems images are in vogue here