Aside from having to breath into the device to get their vehicles to start, offenders will have to pay a $30 monitoring fee as well as the charges for installing and leasing the interlock device.
*Update (11/30/2008)* An article from the Suburban News gives details on the costs and procedure for the new interlock law.
Mothers Against Drunk Driving (MADD) is currently pushing to have all states pass laws requiring first-time DUI offenders to install interlock devices on their cars. In Pennsylvania, MADD is promoting a similar law.
For more information, go to:
http://www.suburbanchicagonews.com/heraldnews/news/1306296,4_1_JO30_NEWLAW_S1.article