Call ETWRC for instructions or read the information provided in this site.
If it is determined the animal needs assistance, then:

Pick up the animal gently with gloves on;

Place animal in a small box with soft cloth on the bottom. Secure lid and create ventilation.

Place a heating pad set on "low" half way UNDER the box, or a plastic bottle filled with hot water and wrapped in a cloth IN the box;

Place the box in a quiet, dark room. DO NOT give food or water.