There should be an offline version round here somwhere contact support for the link & instructions,Impulse is nothing more than a standalone installer with a few bells & whistles added,as every bit of software you have has it's own installer using impulse means you only need the one for the products you purchase,saves gunking up the comp with even more crap you don't need
besides impulse can be set to only work when you want it so a few extra mb residing on the comp won't kill ya 