try the following -
1st END WORMS PROCESS
1.- press ctrl alt delete
2.- go to process
3.- double click image name
4.- scroll down until you find "msblast.exe"
5.- end it if you find it.
2nd REVERSING CHANGES MADE TO THE REGISTRY
a) click start and then run (the run dialog box appears)
b) type regedit
then click OK (the registry editor opens)
c) navigate to the key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersi
on\Run
d) in the right pane delete the value:
"windows auto update" = "msblast.exe"
e) exit the registry editor
3rd - turn on the firewall on your computer.
4th - download the patch from
http://www.microsoft.com/technet/security/bulletin/MS03-
026.asp
hope this helps.
thanks,
ramesh