It depends what's causing them.
Do you have a firewall and is it operating?
What do the windows look like? Do they look like windows messenger windows with just writing or do they have pictures like a small web page?
If it has what looks like IE spawning popups you are infected with malware - adware.
Do you have any anti-spyware programs like Adaware, Spybot Search and Destroy, Microsoft anti-spyware?
If not, download, install them, update and run the following anti-malware programs in SAFE MODE.
*AdAware SE: http://www.lavasoftusa.com/software/adaware/
*Spybot S&D: http://www.safer-networking.org/en/index.html
*the two most important to have!
Microsoft Antispyware Beta: http://www.microsoft.com/athome/security/s...re/default.mspx
Set them to fix what they find.
After running all three, run the following web based scans using Internet Explorer:
Kaspersky Anti-Virus Web Scannerhttp://www.kaspersky.com/service?chapter=161739400#betatest
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
Windows Security Trojanscanhttp://www.windowsecurity.com/trojanscan/trojanscan.asp
Let us know the results.
Edited by Enthusiast, 06 December 2005 - 11:13 PM.