Okay, I got it partially.
But still would have the problem that the wallets would be infected so I would need to get all my wallet keys out and leave the rest?
Secondly, my system will be way slower when I am using virtual machine?
Its probably I good idea, so I could get familiar to linux. Since I use win 7 but I think for some purposes it is good to know linux.
So if I run virtual box I can use to operating system at once. this also means my computer will be slower? also in mining etc?
But I always can stop virtual box and only use it when I need it.
Is there a good way to check my computer for virus or malware or whatever there is out?
Or is simply antivir, spybot and windows firewall enoug?
sorry for bothering you, but i think its good if I know this and get familiar to these points
You can link a virtual machine to a usb thumb drive and save your wallet dat on that if the machine gets infected. Afterwards you can scan the usb stick to remove any viruses and copy the wallet dat onto your real computer.
There is a virus that can infect usb sticks and travel between computers using them called the conficker virus. You can stop it using the software linked to below. However, the software disables auto run functionality on any usb stick you use it on. Therefore you have to open the usb stick drive folder yourself.
http://www.majorgeeks.com/files/details/panda_usb_and_autorun_vaccine.htmlWindows firewall used to be crap. The best one to use depends on how well you know how to configure a particular frewall and how many firewall pop ups asking if it is OK to let a program access the internet you are willing to put up with. Some firewalls decide for themselves and others can be set to ask you every time something wants to get through to the internet.