How easy to replace a blower motor on a ralliart sportback lancer? on 2004 Mitsubishi Lancer

My lancer ralliart sportback has not had A/C or heat for quite a while. Sometimes I can get a little cool air coming through the vents, but the car must be travelling at a fair speed and as soon as I slow down or stop there is no air flow. Checked the fuses, they're ok. Pretty sure it is the blower motor. Think this is what I see when I open up the compartment under the glove box. How easy is it to replace this?

Asked by for the 2004 Mitsubishi Lancer
Here is a Web site with repair manual info for your car, it will explain how to replace your blower motor.