You are not in the right forum. For install DNN, look at the file DotNetNuke Installation Guide.pdf inside DotNetNuke_4.4.1_Docs.zip available in the Download section chapter DotNetNuke 4.5.5, click on DotNetNuke 4.5.5 Docs (I know the title is different than the real file name, but it's ok).

Gilles

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We (team members) are Humans offering their knowledge, their work and their spare time FOR FREE to benefit the community. It would be so particularly appreciated that your messages begin with "Hello" and end with "Thank you" or any other form of politeness. Ask yourself what your reaction would be, if you were approached by me (a total stranger) on the street to ask you something without saying "Hello" nor "Thank you"? After several years of services dedicated to the community, I begin to be tired to read requests without any form of politeness.