When you install software it is installed to a specific location on your computer, and in most cases you cannot simply cut and paste the files to another location...the programs will either stop working correctly or all together, or the files will be recreated. What you have to do is uninstall the software and then reinstall it from CD, this time specifying the location you want it installed to during installation. Most software nowadays will let you choose a custom option and change the installation directory.
Hope this helps,
Every time I try to move programs to other partitions in order to make more free space on my C drive they come right back accompanied by more files. Why?