This all depends on if they get the patchwaork dns server order extended. If they do then your infected pc will work fine. I hope they do not then these mahcines will cease to work and the infection will become obvious.
If your PC starts acting weird or totally goes offline on or after March 8th(for folks who keep their computers off) Please contact ECC for assistance.
Half of Fortune 500s, US Govt. Still Infected with DNSChanger Trojan — Krebs on Security.