I did this on my DVC-500 - I first bolted a freebie heatsink onto the side of the stove. Then I cut a hole in the side cover & mounted a nice ball bearing muffin fan blowing inwards onto the heat sink. I also migged the bottom of the stove side panel shut - so all the fan forced air would go across the heat sink & out the vents on the top of the panel.
Quite a bit more heat comes off the fan forced heat sinked side of the stove, fan only draws 12W - so instead of leaving well enough alone(the free solution) - I bought some ($$$) better heat sink material off of ebay - & did both sides of the stove. (gobbed that nasty white heat sink compound onto the HS & everthing else it was not supposed to go on) At this point I run one side w/ fan forced air & the other side via convection. The convection side puts off more heat (guessed by hand) than not having a heat sink. The fanned side definitely puts off volumes of hot air - was it worth it - who knows?
If you go the fan route - I found that most of the fans I tried sound good when bench run - but would make a lot of racket when mounted (fan whine and/ or motor rumble)
This is one of the main reasons I am not running both sides w/fans - it may wind up sounding more like a B52 than a stove. Also I have to agree with DLL, you may get almost the same effect by skipping the heat sink & just running a fan
...... I have some photos here somewhere -