are you talking the 07+ wheels? If you are, they have a different bolt pattern, however there are wheel spacers made that have adapters for different bolt patterns.
You have (as well as all TJ's) 5x4.5" (in metric 5x114.3mm) and I believe the JK's have 5x5.5"...but dont quote me on that bolt pattern.
-=edit=-
see below, the JK wheels are 5x5 not 5x5.5 like I stated.