I can't install Pelles C with provided setup file, since i don't have a administrator priviliges, any chance you can provide a zip file also to the download page?
/Kenny
Perhaps you can try to install it to different folder.
Install it as current user and uncheck that
'Protect my computer and data from unauthorized program activity'
use poide.exe /xml command line option.
OS i Windows Vista and soon as i try to run setup file it ask for administrator password, i checked under settings for the file but nothing about running as current user, seems like i'm stuck :-\