Yes, from http://www.vmware.com/products/workstation/faqs.html
Can I switch between Windows and Linux versions?
Yes. you can switch between Windows and Linux versions of VMware Workstation using the same license key. If you decide to switch host operating systems, you must uninstall Workstation from the host operating system you no longer plan to use. If you plan to run VMware Workstation on both a Linux and Windows host, you need to purchase two licenses.
IIRC it was with WS 7 where VMware changed licensing and used the same key for both versions!?
André
