I just visited the eset site. There is a graph there telling me my current infection ratio is 0.6 percent and my threat level is normal. Is that an actual live assessment of my machine right now or something they just put there to induce a purchase? What does a 0.6% infection ratio mean, anyway?
No Rootbeer that is just an internet monitor many security sites use to display the current status of virus attacks on the internet. It has nothing to do with your system.
The infection ratio is how many systems are being infected by the bugs currently going around. Something of interest but not to the typical user.
Applying/running a new AV program to a system that has already been infected and has a virus or trojan payload fully delivered is no guarantee of getting rid of the bugs. It may help but once a system is fully infected the AV can be limited in what it can do to completely remove virus content. Where AV protects is on the front line when the virus or trojan is introduced to the system the first time. A good one stops it dead and does not allow it to execute its payload. A cheap one either misses some, or misses a trick that allows a virus, or part of it, to slip by. Some virus and trojans also shut down AV without you knowing. The program looks like it is running, but it isn't.
If you are fully infected I would recommend the system be wiped clean, the hard drive have zeros written to it using special DOS software and then Windows and all the software reloaded, along with all updates from Microsoft update be installed. With the AV on a clean system it will catch what attempts to get in well before it can execute its harmful functions. Unless you have a tech that knows what they are doing in manual search and destroy of all bugs, and really gets them all, that would be the safest and best course of action to ensure what you have already taken in can not hide somewhere on the drive and come back again.
I have even seen some that hide in the boot sector of a hard disk. Even if their sibling is destroyed on the main partition, they deliver another to the system as needed. Without special training and software tools, the only way to truly kill a boot sector bug is wipe out the boot sector... which is write zero's to the hard drive in DOS as I mentioned above.