Windows 7: Java application wont install win7

I have Jre6 installed already. When I double click on the jar executable , the program stars. The default program location is C:\program files\Evodatamanager. When tries to install I get the error message : "Cannot write to this folder chose another"

I tried to install as administrator but this option was not available when I right click the installation file.



What to try next? Thanks

The jar executibles name is? and evodatamanager is?

The .jar file can be found at this link: EVO Datamanager

The executable is EVODataManager_Instal__0_9_8.jar

THe Evo Data Manager is a piece of software that can be used to download data from my Radio Control Transmitter to my computer so I back up the model airplane settings . It is also used to manipulate the settings if needed and send the changed data back to the Transmitter.

The link is in German but the after translation into English , the meaning is quite clear.

Thanks