Need to Clean Virus Infection

Hi,

My laptop using window xp got a virus from a flash disk even though there was a symantec antivirus 8th edition in it.

The virus behaves as follows, it creates word files for any program or folder that it infects, it you delete the word files, they are just created again almost instantly. The second thing the virus did was that it blogs access to many important areas of the computer such as the control panel, system restore, and finally it doesn't allow system scan and repair from free antivirus
program over the internet. It does this by terminating any download process or any dialog box that leads to the downloads.

please not that I am in a remote area and therefore has no access to antivirus programs on CD. Therefore I had to relay on internet antivirus.

I welcome any ideas on solving this problem.

Thanks,
karinkuwe.