I quoted a section from Software License Agreement for Intersoft Solutions Corp.

III. PERMITTED USES. This LICENSE grants you the following rights:

A. The SOFTWARE is licensed per individual developer. You may make copies on more than one computer, as long as the use of the SOFTWARE is by the same developer. If you have purchased a "multi-pack" license, you may use a copy of the SOFTWARE identified in the multi-pack on the number of computers associated with the multi-pack (e.g. a five user multi-pack allows you to use the SOFTWARE on up to five computers concurrently or by five different developers, the ten user multi-pack on up to ten computers concurrently or by ten different developers). The SOFTWARE is in "use" on a computer when it is loaded into temporary memory (i.e. RAM) or installed into permanent memory (e.g. hard disk, CD-ROM, or other storage devise) of that computer. However, installation on a network server for the sole purpose of internal distribution to one or more other computer(s) shall not constitute "use" for which a separate license is required, provided you have a separate license for each computer to which the SOFTWARE is distributed.

A virtual machine is considered to be a computer. Please register the licenses on both of the virtual machine.