At risk of being very boring half the advice above appears to be 'well this is what I do so you will have to do it too'. It sounds like a hijacker of some description.
If you want a painless attempt at removal go to the following link and read carefully the step by step instructions on what to do.
If you feel less than confident then make a post and explain your problem having complied with what they ask you to do before posting and someone who knows what they are doing will assist you.
Majorgeeks