It may not be vundo after all: dp.sys is also a symptom of the Agent.ny Trojan:
http://www.sophos.com/security/analyses/trojpuperru.html
If you’re still having problems, try updating and running all the programs again in safe mode. They often find more malware the second time around.
http://www.pchell.com/support/safemode.shtml
Run Ad-Aware, Spybot search & Destroy, Ewido and a-Squared in safe mode, then do a boot time scan with avast!
a-Squared http://www.emsisoft.com/en/
Spybot Search & Destroy http://www.safer-networking.org/