Hello, this is the reply from Google Staff :
It looks like the pages are returning a proper 404 now – that is good. Suggest you go ahead and submit a reconsideration request. The process is described in this ref
http://www.google.com/support/webmasters/bin/answer.py?answer=35843
Note in the request you are submitting because your site has been flagged with a this site may be compromised warning.
p/s:THANK YOU SO MUCH for helping me! 🙂