More people are using partitions to separate and store groups of files.

XP uses the C:Program Files directory as the default base directory into which new programs are installed. However, you can change the default installation drive and/ or directory by using a Registry hack.

Go to :-

- Start > Run

- Type regedit

- Go to this directory
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersion

- Look for the value named ProgramFilesDir. by default,this value will be C:Program Files. Edit the value to any valid drive or folder and XP will use that new location as the default installation directory for new programs.