download BT5 as an iso
save to a spot on your hard drive you will remember/ know where it is
download and install virtualbox
create new
click next
make name for it
fill in os
next
choose memory (in your case 512mb or less should be good)
create new hard disk
choose VDI
10gb should be sufficient
next
create
then enter new vm and choose the ISO you downloaded and install. No need to dual boot or make a partition on your hard drive when using a virtual machine


