Browser Problem

[Tjss]

yo,got a problem with my computers web browser,everytime i close a browser,a white box appears saying:About blank,i cant take it off,even with task mananger,it dosent seem 2 come off,the box fills the whole entire screen,its getting on my nervs now,any help?:P

 

[koni]

run a spyware remover mate like spybot s&d

http://fileforum.betanews.com/detail/Spybot_Search_and_Destroy/1043809773/1

clear all the internet cache, cookies etc

if that doesnt clear it, run an antivirus program:
http://www.kaspersky.com/scanforvirus