Can the attorneys control the interest rate on a judgement they have won? Who controls that?

Interest on judgements is a matter of state law. There are interest rate calculators which can figure out the total debt, if you know the rate. Calculator - Judgement Collections (http://www.judgmentcenter.com/Calculator.htm)

Interest on judgements is a matter of state law. There are interest rate calculators which can figure out the total debt, if you know the rate. Calculator - Judgement Collections (http://www.judgmentcenter.com/Calculator.htm)


Do you know where I can find the "state law"?

First read the judgement, this normally should be specific to this,
Call the clerk of the court and see what the allowed interest is

do you know where I can find the "state law"?

What state are you talking about? Check this: http://www.carreonandassociates.com/articles/collectionlaws.htm