your information from 1st post shows that you formated your hdd
and if you didnt backup your wallet.dat from dir described in bitcoin faq
Go to Start -> Run (or press WinKey+R) and run this:
BitCoin's data folder will open. For most users, this is the following locations:
C:\Documents and Settings\YourUserName\Application data\BitCoin (XP)
C:\Users\YourUserName\Appdata\Roaming\BitCoin (Vista and 7)
"AppData" and "Application data" are hidden by default.
than you will never have that money again
wait, u said that you sended money to some other address, which is related to old bitcoin install or the new ?