Numlock problems in Virtualbox linux Mint

My situation is this:

• I run linux Mint from Windows 8.1 using Virtualbox.

• I have disabled the numlock (and the other *lock keys) in Windows by rebinding my keyboard using The Microsoft Keyboard Layout Creator.

• Windows boots up with numlock on so my numpad works.

• In Virtualbox, Mint boots up without numlock on.

• Cannot turn it on because the key is unbound.

• Don't want to re-enable the bind in Windows.

• Linux Mint apparently lacks an on screen keyboard solution like Windows has.

The solution I found was to install an application that can turn on numlock via the terminal using numlockx:

sudo apt-get install numlockx
/usr/bin/numlockx on

Problem solved. To enable it from startup, can use:

sudo sed -i 's|^exit 0.*$|# Numlock enable\n[ -x /usr/bin/numlockx ] \&\& numlockx on\n\nexit 0|' /etc/rc.local

I haven't tested this part yet because I have yet to restart.