Start your computer in safe mode with command prompt and type the followinf command
to enable registry editor:
reg delete HKCUsoftwaremicrosoftwindowscurrentversionpolicies system /v
"DisableRegistryTools"
and run HKLMsoftwaremicrosoftwindowscurrentversionpolicies system /v
"DisableRegistryTools"
after this your registry editor is enable
type explorer
go to run and type regedit
then follow the following path:
HKLMSoftwareMicrosoftWindowsCurrentversionRun
on the right side delete the entries which contain 'Brontok' and 'Tok-' words.
after that restart your system
open registry editor and follow the path to enable folder option in tools menu
HKCUSoftwareMicrosoftWindowsCurrentversionPolicies Explorer 'NoFolderOption'
delete this entry and restart your computer
and search *.exe files in all drives (search in hidden files also)
remove all files which are display likes as folder icon.
your computer is now completely free from brontok virus