Yes, get a cooler, or even just make some ducting from one of your case fans. That's what I did with my front case fan, it blows directly up onto the bottom of my WD now. Keeps it nice and cool.
See pics here:
http://home.comcast.net/~tru2chevy/He4ther.html
The page is ancient, specs need updating and all, but the pics still show the modded case fan holder in the front of the box.
- Justin