You said you tried it in your DVD player, I'm assuming that means you want a slideshow.
What you are trying to create is essentially a movie. Nero is building a slideshow then turning it into video, which makes the filesize much larger than space taken up just by normal jpegs.
If I remember correctly while Neros does have alimit on how many images you can use you can however have multiple slideshows on one DVD, so for example if you had nearly 200 images you could get away with having two slideshows with a menu at the begining to select which slideshow to play.
If however you want it all in one movie then you're using the wrong program. Microsoft had a program called PhotoStory 3 which I feel would do what you want. It used to be available for download from Microsoft's website, just do a search for Photostoy 3.
Actually, forget the search, I found it Here
Will build websites for 'L' glass.