OK, download and install CCleaner. Go to C:\Program Files (x86) and delete the LucasArts folder if KotOR is the only LucasArts game that you have installed, or the SWKotOR folder inside the LucasArts folder if it isn't. Empty the recycle bin, run CCleaner's registry cleaner (backup the registry first every time you run it) and reboot, then run CCleaner's registry cleaner again and reboot, and see if the game will install then.
"They should rename the team to the Washington Government Sucks. Put Obama on the helmet. Line the entire walls of the stadium with the actual text of the ACA.
Fix their home team score on the board to the debt clock, they can win every game 17,000,000,000,000 to 24. Losing team gets taxed by the IRS 100%, then droned."