Thanks everyone that responded on this. I am using Expression Blend 2 but don't know at the moment if it is the latest. Also, it probably takes a little getting used to. I ended up deleting the same window several times because it was hosed when going back and forth. At that moment I just quit opening the solution in both IDE's at the same time. I am sure with a little experimenting I would figure out how to do it with out causing myself grief. Boy, I wish MS would get WPF further along in this regard. It is not so much fun working in two different IDE's at the same time. There is stuff you can't do in each of them so I don't see how to get around it for now.
Tim

>>Tim,
>>
>>It takes a little getting used to. You always have to remember to save in one before going to the other. You will get the meesages to re-load, but I have not been having too many problems. Sometimes building the solution helps too.
>
>If you haven't read the rest of the thread, it sounds like the problem goes away with Expression Blend 2.