I know this probably isn't the best place to ask on, but I figured someone here might know... it'll save me signing up to the NSIS BB.
Some of the portableapps here bring up errors when I try to use them on my university's computers because they use regedit to mess with the registry, and you need admin access for that. I've figured it can't be that hard to adapt the source code so that it does exactly the same thing, but using a different method to edit the registry. I've found this: http://nsis.sourceforge.net/Registry_plug-in . If I change the portableapps source to use that, do you think my uni computers will run it without a hitch?