Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
I'd try F-Secure too. It has the advantage of not being on your PC until the scan starts so it isn't likely to be affected. Most of the sites I saw described removal as more or less deleting all custom or personal browser settings, but can't say if this gets it all or if it will assert itself again. Sometimes a System Restore will do the trick as well. Did you try scans in safe mode?
I think for the RansomeWare, which knows no geographical bounds, can also be fixed by having the aforementioned second admin account, then deleting the primary. I am also a fan of System Restore which has saved my b*tt many times..