No need to uninstall. 2.0 is a new program and both can be on your comp at the same time. All of your templates and thing from 1.0 will go into your 2.0. I think I will really like the new options. Good luck.
To make it easier on myself, I switched everything over to version 2.0. I converted all my files and uninstalled version 1.0. I tend to get confused over computer things (still can't figure out PSE 5.) I love that Scrapbook Max is so easy to use!!!