Fedora 10 is one of the latest Operating systems released under Linux.Basically no Linux OS have the risk of being attacked by virus apart from that fedora 10 also have the features like
1. Desktop cube
2. 3D windows
3. Of course comes with a huge collection of open source softwares.
4. uses hard disk as RAM.
The only thing that should be done to start moving from windows into Linux is to delete one of the partitions and then create some ext32 partitions while the setup process take place.