Hello! I’m new here and could really use some help fixing my computer

I’m sure you’ve heard of this one plenty of times by now, but I keep getting the warning for a blocked website (I get two different addresses) and
URL:MAL and URL MAL2 I am not completely computer illiterate but this little one is giving me the run around. Avast seems to be keeping it at bay but then there has been a few times that I started up the computer and got a blank desktop. The desktop is back now but my browsers have been a little buggy. I’ve tried cleaning with Avast, malewarebytes and mighty uninstaller but I don’t know the depth of this particular bug or how to be rid of it. I have done searches and it seems like I must gather logs and give them to the gurus to get the information I need to be rid of this.

If you can spare some time to help me out I will be very greatful. I will check back as soon as I can

Very likely the sites are blocked because they are blacklisted.
Please provide us the sites but make the links NOT CLICKABLE

And follow these instructions: http://forum.avast.com/index.php?topic=53253.0

Thankyou!

Infected websites: 1) http:// www. giganticdownload .com / update.php
2) http: / /jb. revolvermaps. com /r.js

Here is this for now, I have to go for the moment but after I get back from work I will follow the instructions and post my logs