1. A method comprising: receiving a request to convert a plurality of computers on a first host into virtual computers on a second host; accessing a script that defines an execution sequence of virtualization operations to be executed in order to convert each of the plurality of computers into the virtual computers at a point in time, the execution sequence of virtualization operations being based on relationship data for the plurality of computers, the relationship data identifying parameters that define communication information needed to communicate between the plurality of computers; and converting the plurality of computers into the virtual computers at the point in time by executing the execution sequence of virtualization operations.