Ok so that means your system has Microsoft IIS installed, they are doing that on later versions of Windows for some reason. If you are not intending to use it you can uninstall it, it is not an integral part of windows so its being uninstalled wont effect normal operations of windows, and if you need to install it again later, it comes as part of the standard OS so you wont need to do anything perticularly clever.
So go to Start -> Control Panel -> Programs and Features
Click the 'Turn windows features on and off' link in the left hand menu.
Wait for the list to load and then find 'Internet Information Services'
Un check the check boxes for the following items ( you may not see all of them )
1. IIS
2. Web Deploy 2.0
3. MS Sql Server Reporting service.
List of possible service names
http://blogs.technet.com/b/fort_sql/archive/2010/05/31/list-of-sql-server-service-names.aspx
Windows will then have a think for a while and then remove those applications, you will probably be asked to reboot to complete the uninstalls.
Reboot anyway when the uninstalls are complete.
Then try wamp again.
Alternativeley just disable it.
Start -> Control Panel -> Administrative Tools -> Services
Find IIS in the list of services.
Left Click that line and select Properties
Change the 'Startup Type' to disabled.
You may need to tdo this to MS Sql Server Reporting as well.