Hi. Is it possible to read a raw voltage on VEX sensors? I need to do this for a project I'm involed with. Thanks.

Not really. The Cortex returns Analog values as a range between 0 and 4095. You could strip a little bit of the insulation off of one of the sensors (a potentiometer would be best) and measure the voltage values as they correspond to the sensor values. From there you could create a lookup table to meet your needs.