raman
2
What kind of problem do you have? Winstart001.exe is not a Systemfile. I think it is the Klez worm.
Or aren´t you able to start any Programm and windows say that it needs this winstart001 Programm? If so, you can find a solution here:
http://www.avast.com/forum/index.php?board=1;action=display;threadid=259;start=0