If you have installed correctly the VirtualBox software, then if you already have a BOINC client for Windows installed you can skip to step 3.
Otherwise you are ready to install BOINC for your Windows box. The installation process for BOINC in Windows is very simple:
- Download the BOINC client installer from the official BOINC download link
- Double-click in the installer, and follow the instructions without modifying the default options (please, make sure that the option Protected Application Execution --PAE-- is disabled). You need to disable PAE because BOINC needs to run under your account in order to run the Virtual Machine. This is a temporary solution as the BOINC team is working on a fix.
- Attach your BOINC client to the project.