VMD is made available free of charge for all interested end-users of the software (but please see the Copyright and Disclaimer notices). Redistribution of the software to third parties may require a special license, please check the current VMD license agreement for details. We would like to request that you register with us that you are using VMD. This is so that we can maintain some idea of the number of users of the program and so that we know who to contact about program updates, bug fixes, etc. Registration is now part of our software download procedure, so once you've filled out the forms on the VMD download area you are finished.