If you're using Internet Explorer download the google toolbar which has an effective popup blocker built into it.
I believe you can get one for Firefox from them as well.http://www.google.com/intl/en/options/
scroll down to "toolbar".
Also check extentions in Firefox as well.
There are several different kinds of popups - some coming from a webpage you might be on, some residing in malware that has been installed on your computer - trojans, etc, and some through Windows Messaging. To effectively block them you need to find out which ones are bothering you.Freeware AntiSpyware and Security ProgramsSoftware firewalls with freeware versions
(The firewall that comes with Win XP does not cover you against outgoing threats such as trojans, phone homes and dialers. Get one of these others as they will provide coverage for both)
Zone Alarm SE: http://www.zonealarm.com/
Sygate: http://www.sygate.com/Antivirus programs - freeware
(you can only use one resident anti-virus program on your computer. More than one will conflict)
Avast Anti-virus freewarehttp://www.komando.com/bestshareware.aspAnti-malware freeware
(You can run as many of these as you wish. Generally there is no conflict between these and you should always run several)
Microsoft Antispyware Beta: http://www.microsoft.com/athome/security/s...re/default.mspx
Spybot S&D: http://www.safer-networking.org/en/index.html
Microsoft Malicious Software Removal Tool (Win XP and Win 2000):http://www.microsoft.com/security/malwareremove/default.mspx
AČ - Free from http://www.majorgeeks.com/download4281.html
. Run it, click Search for Updates, then click Scan.
CWShredder from InterMute
CW Shredder removes some variants of spyware known as the Coolwebsearch Trojan. The Trojan takes advantage of a flaw in a key component of Windows -- Microsoft's version of the Java Virtual Machine -- to install itself via popups often found on porn and illegal software (a.k.a. "warez") sites. Run CWShredder after installing, and have it look for updates. Then click the "Fix" button, and the program will both scan and fix any problems it finds. If your system does not have this kind of spyware, it will give you the good news.
Cost: Freehttp://www.intermute.com/spysubtract/cwshr...r_download.htmlHijack This
and a variety of other tools for malware and pestwarehttp://188.8.131.52/~merijn/files/HijackThis.exe
orhttp://www.spywareinfo.com/~merijn/downloads.htmlWeb based online Antivirus and anti-malware scans:
(these can be run regardless of whatever else you are using. You must use Internet Explorer to run these.)
Panda Activescan (IE only)http://www.pandasoftware.com/activescan/co...n_principal.htm
Trend Micro antivirus and malware scan:http://housecall-beta.trendmicro.com/en/st...orp.asp?id=scan
Etrust Anti-virus web scannerhttp://www3.ca.com/securityadvisor/virusinfo/scan.aspx
Kaspersky Anti-Virus Web Scannerhttp://www.kaspersky.com/service?chapter=161739400#betatest
online trojan scans here - http://scan.sygatetech.com/pretrojanscan.html http://windowsecurity.com/trojanscan
How to submit a Hijack This loghttp://www.bleepingcomputer.com/tutorials/how-to-post-a-hijackthis-log/http://www.bleepingcomputer.com/forums/How...s_Log-t956.html
Microsoft Baseline Security Analyzer (MBSA)
MBSA is an easy-to-use tool designed for the IT professional that helps small and medium businesses determine their security state in accordance with Microsoft security recommendations and offers specific remediation guidance. Improve your security management process by using MBSA to detect common security misconfigurations and missing security updates on your computer systems.http://www.microsoft.com/technet/security/...s/mbsahome.mspx