- connect to the host using vSphere Client
- Select host
- configuration tab
- click on "Licensed Features" under Software section
- click "edit" on the right uper corner
- select "assign a new license key to this host"
- click "enter key"
- ...
- click ok
- done!
I just did it in the test hypervisor i created in my vmware workstation!
Message was edited by: MagnetBoy
VMware Certified Professional – Datacenter Virtualization (vSphere 5)