Well, to my experience, it is possible to use some virtual-x64 box from an x86 installed host (I've just tried with VMWare Workstation 7 on a Dell 755). Reverse is, of course, possible, if you have an x64 system, with any virtual-platform based software.
What about the matter of using an x86 vmware and Fedora, surely not.
- x86 Host-OS w/ VMWare Workstation => x86 & x64 VMs possible, not sure about any other VBOX software
- x64 Host-OS w/ any VBOX software => x86 & x64 VMs possible.
Keep me up about your case please, would be interested of the results you get.
NOTE : Check that your host bios has the power for virtualization (Intel-VT enabled, trusted execution OFF, just check for any 'memory share' parameter in case your bios options doesn't applies).
Last edited by g33ky; 06-08-2010 at 02:33 AM.