...
Windows Vista 32-bit Host machine installing Vista 64-bit as a Guest OS:
When selecting 64-bit Vista from the pull down menu when creating a new virtual machine, a caution sign with the text 64-bit guest operating systems are not supported by this host and will not run is displayed, however, it is easy to miss and can continue on to create the vm (until the virtual machine is started and it reads the DVD). It attempts to load the files but again, the Windows boot manager window appears and provides the same message as indicated above.
Details on this issue can be found in the VMware knowledgebase article:http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1901
...
In Full Screen mode with a Mac OS host machine, it's not possible to open the spotlight search.
...