something got in, emailed everyone on my contacct list. anti-virus up to date,done online scans, help?

Go with a more secure email service, such as Gmail...I have had an ungodly amount of Yahoo email addresses, and every time, they get hacked and send out rogue emails. I have had the same Gmail account for almost 2 years, and I have NEVER had this issue.

Your computer wasn't hacked nor infected by a virus. You have a spyware infection that is sending those emails to all your contacts without your knowledge. Download and install this antispyware:

http://www.malwarebytes.org/products/malwarebytes_...

Update it before doing a full scan. After the scan, change your email password as it may have been compromised.

Log into your account, change security questions/answers, make sure there are no alternate email addresses you are unaware of, as new passwords will be sent to alternate emails also, and then change your password to one with 10, or more characters.

tyutyutr