[SOLVED] Problems saving process

Hi everybody,
I'm new to rapid miner. At my first use, I tried to save new process in the repository but got this error message:

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Exception: java.io.IOException
Message: Cannot store process at //NewLocalRepository/text categorization: Cannot write C:\Program Files\Rapid-I\RapidMiner5\LocalRepository\text categorization.rmp: java.io.FileNotFoundException: C:\Program Files\Rapid-I\RapidMiner5\LocalRepository\text categorization.rmp (Access is denied)
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Can somebody please explain me on this?
Thanks.