To acknowlegde a received email?

This is crap. They didn't even spell "Asia" correctly! Any time you "won" a lottery or sweepstakes that you didn't enter, you didn't really win. These emails are a scam to try to get your personal information. Never give out your bank account information, or your social security number. Also, don't deposit a check if you're not sure where it came from. The scammers will get your bank account info when their cancelled check is returned to them. There are legitimate sweepstakes out there, but this isn't one of them.