@ firefox007,
You first need to open up your own thread so that we can help you. To do this please start a New Topic of your own as where you currently posted is not for giving advice or solving problems.
Go to this link,
http://forum.avast.com/index.php, scroll down to the Worms and Virus forum and click it, click the New Topic button at the top of the list and post there.
In addition, when making your first post, please type in information about your machine:
1. What is your OS, 32 or 64-bit?
2. What version of Avast did you install? 5.0.677?
3. What product of Avast did you install? Free, Pro, AIS?
4. Tell us the results of your Boot-time scan.