Jacks,
If the line from the coupler to the faucet is less than five feet long there is not enough resistance to properly slow the flow of beer and prevent foam. The primary reason I recommend a conversion is because of the increased cooling ability of a full sized refrigerator over a production unit. If done properly they can look very attractive too. Check out mine here, please ignore the tap handle, I havent been able to lay hands on a Amber Bock handle yet so I used one a friend gave me...
http://members.cox.net/treelandtechn.../Kegerator.jpg
Semper Fi,
The Gunns
"Beer is proof that god loves us and wants us to be happy" - Benjamin Franklin