Just because you purchased ths system at auction does not make you the legal owner of the application and most especially any third party content on the system.

SMS will not allow you to update or offer you support as the license and serial were purchased by someone else.

If there is content such as the V4, M4 or any of the DAZ models or content, DAZ will not recognize you as the legal owner.  Same holds true for vendors here at RMP and RDNA.

The only way you will have legal ownership is to purchase the app from SMS and purchase the content that was not part of the Poser install.

It's a good idea to read the EULA for Poser and the EULA's for any content that comes from DAZ, RMP, and/or RDNA.