how can I get "manual" input into my RCX?

I am working on a model that requires me being able to send 6 different 
inputs into my program (each will then trigger a motor in either forward or 
reverse for a set amount of time). I might be able to get away with only 4 
inputs if I get rid of one of the motors (I have some ideas on how to do 
that) but I still gotta find an easy way to get the inputs in there in the 
first place...
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Did you check the web site first?: http://www.crynwr.com/lego-robotics