THIS PROBLEM IS SOLVED! AND DO NOT BUY A THING!!!!!
Go to the Epson site and download the Epson Perfection 4900 (4990) driver for Windows 7 (your choice of bits).
Install that.
Then plug in your different/older scanner (I've done this with the 2450 & 3200!).
Go to Devices and Printers.
Add a device.
When offered, select to choose your device from a list.
Navigate the left column to Epson, and the right column to Epson Perfection 4900.
Force Windows to use it anyway.
Done.
The tip-off is that all these scanners claim a "micro-step technology", ergo, SAME HARDWARE! You just have to lie about the model and you're done.