Cubase 6 and 5 AI on the same machine

I just installed Ai5 on the same machine as 6 to have the ability to launch cubase on the go if I forget my dongle at home but I’m unable to launch because of plugins I have that require the dongle (HSSE, symphonic orchestra). Is there anyway to place these plugins in a place that Cubase 5 AI will not look but Cubase 6 will so that I can launch 5 without the dongle?