A VM is a volt meter. A multimeter does the same thing but includes other functions as resistance and current. Either one will do. This is a typical multimeter:
These include two probes, one black (-) and one red (+), that plug into two of the holes at the bottom. To check voltage with the above meter, the black would plug into the COM (common) hole and the red probe would plug into the one at the far right. Turn the dial to V DC to check Direct Current voltage.
There are two larger gauge wires that go from the Blower Control Module to the blower motor. Insert the red probe in the positive wire cavity (PPL wire I believe) and the black probe in the negative wire cavity (BLK wire) at the blower motor connector. When the fan is set to the highest setting, the voltage should be very close to, if not exactly, battery voltage. If it shows battery voltage and the blower motor doesn't work, then the blower motor or the connectionis bad. If it shows noticably lower than battery voltage then it'* either the BCM or the HVAC programmer.
I have both the blower motor and BCM from a 97 SSEi. Let me know if you'd prefer buying some used parts vs new once you've completed the testing.