Hi,
Go here:--
http://www.lavasoftusa.com/software/adaware/
And get the VX2 add-on for your Adaware SE, after installed run the tool by clicking "add-ons". It is on the left hand side of Adaware SE box
Also run Adaware SE from safe mode please as well as SpyBot.
Then let me know if any changes have occured.
Also what does that DNS error say exactly?
New hijackthis log also please.
Try this virus scanner and post the log it makes also.
Internet Explorer required
Also this excellent(BitDefender) scanner:
http://www.bitdefender.com/scan8/ie.html