Although the question by itself is not clear, we can somehow guess that the OP has some problems related to session 0.
As user-desktop is mentionned, I guess that the user want to access the desktop from the service and was able to do so in XP but not Win7.
I have found the following article:
http://www.brianbondy.com/blog/id/100/[
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As a side note, if someone does not know the language well, there are a few tips to help ensure that we can understand its problem. Thje first thing would be to explain the problem and what you want to do. One sentence is not always enough for an automatic translation. Having at least five properly written sentence might help ensure that the translation do make sense.
Also, you can try to translate back the translated text to original language so that you have a better idea if something important was lost with the translation. If the text translated back and forth is not understandable at all, then it might be a good idea to try to say it another way.
Finally, if you know keywords like "session 0", then using Google might be easier than asking a question if you don't knows the language enough.
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