[shaggylive]

well, most things are available in cab format. if their not then likely a cab won't work, but there are some tools out there to aid with what your trying to do, results will very.
other wise no2chem once made an app nuePackage installer, and I believe dan made a cab for it, but it too is not guaranteed.
lastly I'll recommend sashimi, as it has a variety of tools all wrapped up in a neat app to automate a personalized install.
may the force (Google) be with you..