Plugging in Android to PC directly not working

I alr plug in my devide and turn on the USB Debugging but it is still not working yet !
However to finish this project in 30 hrs, I need to do other things. So, I will have to ask helps from my friend in the morning later !



Some possible solutions (but not helpful) for those who got similar problem as me.
1) http://stackoverflow.com/questions/4099593/how-to-connect-a-htc-android-phone-to-the-pc-as-debugging-device
2)http://stackoverflow.com/questions/7098295/how-do-i-install-an-htc-android-phone-for-debugging-in-ubuntu
3)http://androidforums.com/t-mobile-g2-touch/7293-htc-sync-problem.html