Sorry friend but there is no Microsoft, Yahoo or other e-mail lottery, it’s a scam do not answer do not give personal information.The following sites give more information
http://www.snopes.com/crime/fraud/nigeri...
http://www.thescambaiter.com/forum/showt...
http://www.hoax-slayer.com/email-lottery...
.Also If you go to the following site you will get some info on ID theft http://www.identity-theft.org.uk the iinternet is safe enough if you are careful but please answer nothing that you are doubtful about.Good Luck and be careful

http://help.yahoo.com/l/us/yahoo/mail/yahoomail/abuse/abuse-63.html

No its an identity theft scam or a way to get money FROM you.
They tell you to send a fee, to get your prize.
Then you dont hear from them ever again