circuit design, ohms to volts converter

The problems is this: I have a fuel gauge that displays empty to full based on a input of volts, but the new sender that is being used will send in ohms, therefore I need to convert the fuel sender (ohms) to (volts) for the gauge to register correctly. * Guage requires input of Volts: [ empty = 0.2 volts, full = 4.2 volts ] * The sender, sends in ohms. [ empty = 0 ohms, full = 90 ohms ] * the whole system is 12 volt system, but this changes slightly due to charging from a alternative and does vary, so please take this into consideration some how. I need for a circuit design to make this conversions work, and parts list. May also hire in separate project to build the convertor of all goes well and you can do it. Please contatc, leave a message if you need more information.