ANSWER: Dear Clara,
relating to your questions, the easiest way to put your presentation on a CD-ROM and making sure that everyone will be able to view it, is to create an autorun compact disc.
To do this, you can use PPPCD Deluxe which is the system for distributing PowerPoint (97, 2000, XP/2002 and 2003) presentations on autorun compact discs. Presentations that are included on a PPPCD Deluxe CD-ROM can be viewed on computers that do not have Microsoft PowerPoint installed. PPPCD Deluxe even provides viewing support for PowerPoint XP/2002 and 2003 animations on systems without PowerPoint XP/2002, or 2003 installed.
See here for prices or try the free version.