Help interpreting Solar info please

Howdy all, I am looking at buying a Uni-Solar 128w Flexible Laminate Solar Panel with the following electrical characteristics

Rated Power: 128 W
Nominal Voltage: 24 V
Peak Power: 128 W
Peak Voltage: 33 V
Peak Current: 3.88 A
Open Circuit Voltage: 47.6 V
Short Circuit Current: 4.8 A

it is from the States hence the 24V. I have been buying bits and pieces as I go along to spread costs, I have already bought a PowerTech 20A Solar Charge Controller (http://www.jaycar.com.au/productView.asp?ID=MP3129) with the following characteristics,

Specifications
*Battery Voltage: 12V
*Maximum PV panel open circuit voltage: 26V
*Continuous load/charge current: 20A
*Maximum charge/load current (5 mins): 25A

My question is that the open circuit voltage on the panel is greater than that of the charge controller, so my charge controller won't work with it? But i am confused as I got a 20 Amp charge controller that can easily handle a 128 12 volt panel? I just don't understand why my charge controller is to small for a 128 Volt panel. I guess it's because the regulator is a 24 Volt regulator, so if it was a 12 Volt regulator my charge Controller would be fine? If so is there any way I can modify the panel to work with my charge controller? Thanks alot.