Yes, you'll be able to do that. VMware products are compatible enough to be able to do this, so in the end it's similar to moving a hard disk from one computer to the other.
That also means that some characteristics of the host system hardware (e.g. processor) shine through to the guest OS -- enough that Windows clients require a new license. Low-level OS components in your guest system might therefore behave differently.
You should place all files related to the VM into a folder named SomeDescriptiveName.vmwarevm
. This will make the folder appear as a bundle on OS X, just like VMs created using VMware Fusion.
You are somewhat right : I noticed that I could not run that VM on a Windows XP 32bits computeur because it's Pentium4 processor doesn't handle VT instructions. I'll stick to VMWare, so hopefully no exports to OVF ! Thank you ! – SCO – 2011-11-27T15:08:42.373