Well, IF you don't have access to another computer which you can use to download and burn a rescue disk on, AND there is nothing on your laptop which you want to save (documents, photos, software etc.) you could try putting the laptop back to it's original factory settings, or in the worst case, reinstall the operating system and all your software from scratch, reformatting the drive in the process. There should be some information about how to do that in the documentation you got with the laptop.
Somewhere like PC World or a local computer shop may be able to help, but it's also possible that they will take the, for them, easy route and either reset the computer to it's factory settings or reformat the drive and reinstall Windows for you.
I'd still try the rescue disk route first. See if you can get a friend to download and burn one for you, or if the tech people at work will do one for you. At least that way you have a chance of saving any important files before using the nuclear option of reformat and reinstall.
Whatever you do, don't try saving files before getting rid of the virus - if you put them onto a CD, a USB drive or an external drive with the laptop as it is, the virus will almost certainly put itself on them, then re-infect your laptop when you access them again.