|IrfranView is a very good picture viewer but your files should still open naturally using "Windows Picture & Fax Viewer" (part of XP).|
Insert your DVD then go to your CD/DVD drive in My Computer. You should see your picture files listed. Double click the first one and the viewer should start, allowing you to see that one and slide-show the rest. If this doesn't happen then explain exactly what you saw and what happened - we can take it from there.
Ms Hulot goes horse riding