I find it folly to install my applications on the C drive, especially the larger applications. Doing so makes the C drive so large that it is cumbersome to make the image backups that I think are necessary to insure an easy recovery from any problem causing a failure to boot. In WinXP, there is...
application management
custom install
defaultinstallation
drive management
file location
hotkey
install path
installation issues
program files
registry edits
registry key
script development
software installation
system backup
technical support
user intervention
windows 7
windows settings
windows xp