If you want to instal a "new risky" wallet the best way to do in my opinion is to instal a virtual machine on the pc.
In easy words a virtual machine is an emulator of the computer, inside the computer but no shared with the computer, so if you will install a malware and it will be turn out in a scam, you can delete the machine and create a new virtual machine.
A very good and free virtal machine software is downloadable here
http://www.oracle.com/technetwork/server-storage/virtualbox/downloads/index.html, you will need only free space on hard disk and OS installation CD bootable or Flash drive with OS