Can I install Photoshop CS 6 on a laptop and still use the rest of the CS2's softwares installed on it ? We don't need the last release of the other software (Illustrator, InDesign, Acrobat etc.) but we don't want them to be uninstalled.
You can have mutliple versions of software installed on the same machine. Just be sure to install to a new folder for the new version so that the older files do not get overwritten.
Whether or not a machine can support the range of product versions you want it to is someting else to consider.