Although an oven timer has virtually nothing to integrate with in regards to a VCR, these both may require attention. Depending upon your situation, the inventory may be as simple as a loose-leaf notebook with information on each piece of hardware and software or, it may require a spread sheet or database to manage tracking. Once every item has been identified and itemized, one will soon begin to appreciate the scope of this issue. Its bigger than one first realizes. Nothing can be done without first identifying what really needs to be done and the inventory will help you with the planning phase of this project.
Time is short so it is important to identify every element so that nothing is overlooked.
The Validation Phase is next. This phase concerns itself with identifying which of the inventoried items requires attention and fixing and those that do not require any attention. Many items will probably function beyond Y2K due to their design. Each element should be pretested to insure that it will, in fact, operate properly. Identify every element which either cannot be tested or which fails the test.