For a colleague ( an Oracle EBS functional consultant), I had to install 2 EBS environments on a hard disk (500gb). Using vmware, he would be able to play around, or use the the environments for a demo. I already created both environments using vmware workstation, but decided it would be better to use vmware server. Because vmware server cannot work with the already created workstation environments, I thought starting over waas the only option. Just to check if someone else already faced the same problem, I decided to google for 'vmware conversion' and I found something about Vmware Converter. It seems vmware already created a tool for this kind of conversions !! You can download the tool from the vmware site. I converted the first workstation environment and it worked. I started the new vmware server environment and everything worked like before. Great tool !!