can i cahnge a freezer into a fridge?

I have aquired a used table top freezer that used to be used to store frozen entrees at a store. I thought it was a fridge. The highest setting of the thermostat only brings the temp. up to 10 or so degrees. I want to make this a fridge. I dont know if i need a different thermostat,change the existing thermostat , or is there nothing i can do? On the back panel it does state that the unit is a freezer or refridgerator unit.I dont have the details as to name and model but i can get them if it is at all possible to change it for a resonable price.