[Blind-sysadmins] installing exchange 2003 with jfw

Hi. I am attempting to installing exchange 2003 under windows 2003 using jfw 9. I can get to the part of the wizard where I must select the connectors to install. Does anyone know how to select or unselect items, such as the exchange 5.5 admin stuff or the novell stuff using jfw? I can left or right click on items in the list, but nothing seems to change. is it possible, or must I resort to getting someone to use the dreaded mouse to select what I want. Many thanks Phil