dvd slide shows

I have always used uleads dvd creator. But I always have some photo's that flicker or flash when you play back the dvd. Now with my 20d all the picture flicker... so I think the res. is way to high for the program as my 2.1mp worked better on the pictures. Does any one recumend anything else? Or even a diffrent ulead program? I would hate to take 300 pics and edit them to a lower res.. Please all feed back will be great!