Fedora 17 install VirtualBox

Good manual this.

If you find errors in log file:

makefile:181 *** error: unable to find the sources

or:

Trying to register the VirtualBox kernel modules using DKMSError! Bad return status for module build on kernel

Check this packages in you system:

binutils
gcc
make
patch
libgomp
glibc-headers
glibc-devel
kernel-headers
kernel-devel
dkms

and read this page.