Assuming that your moving from VirtualBox, then may I suggest referring to:
OVF format: import from VirtualBox-4.3 to VMware (VMware Technology Network)
Moving Virtual Machines Between VIrtualBox and VMware (morethanfootnotes.blogspot.com)
How to Migrate a VM from VirtualBox 4.3 to VMware Workstation 11 (eigenmagic)
