If you plan to use VMware player on it, you should know that I got plenty of issues as soon as I started using it: freezes every day or so, the sound was distorted and copy/paste wan't working 100%, I won't get in the details why I chose VMware player over Virtualbox in the first place.
For my office work (read: Microsoft Office 2013 ;-), I needed and purchased licences from Microsoft and wasn't too keen on creating a new virtual machine so I decided to migrate it. The best (and only) working solution I found was to convert the virtual harddrive and use it in VirtualBox. Here are the steps I followed (source):
Install qemusudo aptitude install qemu
Convert the virtual disk to a raw imageqemu-img convert /path/to/original.vmdk converted.bin
Convert the raw image to a VirtualBox vdi format:VBoxManage convertdd converted.bin converted.vdi
I then recreated a VirtualBox virtual machine around that harddrive and was good to go.
Note: I had to call the Microsoft support to (re)activate (virtual hardware had changed) Windows. I suppose they don't mind as long as you don't use the other virtual machine (which I don't intend to do since it was crashing my computer).
Please let me know if it helps (in the comment section below).