Someone said :
never pay them to remove it!!!!!
get someone in to do it for you. if you pay,ur just giving ur credit card details away. they will take everything you have!!
i repair computers and have come across this problem a lot, its getting worse all the time.
most of the time your data can be easily retrieved!!!
best solution is remove hard drive, use another pc to get ur data back and wipe the the computer.
there is anti hijack software to remove it as well, but mush safer to wipe and reinstall
if you need any advice just ask.