with Fruit Bat /\0/\, download, install, update and run a scan with Mbam. But also check in IE7 > Tools > Internet Options > General tab and make sure that the only entry in the Home Page section is her home page. in IE7 and later it's possible to open a number of pages when IE starts.
This is for firefox click here how to stop trueads but as it tells you what Add on is causing them you could adapt it for IE
Go to 'Tools', 'Internet Options', 'Programs', Manage Add-ons'. Go down til you see 'contextual application trueads'. Click disable. open programs uninstaller and look for "contextual application trueads" and uninstall it.
(usually installed sneakily with limewire..... and it is important you run your anti virus, anti spyware/malware programs)