E36 M3: A/C and Heat not blowing

A/C stopped working today and I tested the Heat but no air coming through the vents at any speed. I can hear the A/c compressor when I put it on, but no air blowing though the vent. I tested the relay, but thats fine. I'm thinking its either the blower motor or the resistor. any thing else it could be?? How can I determine which one it is? like how can I test the resistor without having to drop money and then figure out that its the motor?



For those with experience, is the blower motor something that's relativity easy to replace? I know the location, but haven't actually looked into digging into it.



Thanks

E36 M3: A/C and Heat not blowing