Do you know what Starsdoor is?
Starsdoor also know as Starsdoor.com or rond.starsdoor.com is a pop up adware program that uses annoying pop ups to get a user to download and purchase rogue anti-spyware software. Do not download or purchase this software, it is not legitamate anti-spyware software. Starsdoor targets Internet Explorer to redirect your hompage to rond.starsdoor.com or starsdoor.com.
In non-techie terms: Do not fall under the Starsdoor's popup tricks and do not click or download any program recommended on Starsdoor's fake popup messages.