!! Internet Explorer !!

["Farrukh Hussain" <king () danger org>]

Hey,
       Yesterday i was visitng web sites. so i felt my computer slow. and that time i shutdown my computer and go 
somewhere. now today i restarted my computer and when i open internet explorer i got Web Page. Which i didn't SET. and 
now i am not able to write www.anydomain.com . when i type it gave me error. and it is also opening Popup window 
advertise. and it has 2 files in my windows directory. when i removed them it comes back again. So please tell me,
1) what  is  it? 
2) how i can delete/remove it ?
3) how i got this thing ?
4) how to secure from this thing ?

here is the 1 page from many pages in internet explorer.
http://www.farukh.com/1.GIF


Best Regards from,
Farrukh Hussain.

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