its an amount of backlinks...
all my sites get into google very fast. Don't use the google submission processs... Just get backlinks from sites which are already indexed into google, and have good PR. Add it to your signature, and your profile.
Like my profile, says ewebdirectory everywhere. I do that because namepros have a good SE ranking and have a very good PR, and if you want free links, forums are the best way to do tht. Get into good forums, like this one and others.
Also buy PR 2+ links here from several users who are selling, and watch your sites getting indexed fast. Also try to submit your sites to directories as well because some of them really help getting you a PR