Letter to my Landlord - Correct my Mistakes

0 Dear all!!02br
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00I posted this letter that I wrote to my landlord, please send me suggestions about my grammar and spelling mistakes. Thanks, GiYu02br
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01i00________________________________02i02br
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00Dear Stephen,02br
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00In order to make the installation of the Gas meter we will need a written permission from Mr xxx to carried with this procedure out, as we had been told in the the last email from the company on the 25th of April 2007. These authorization letter must include: 02br
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001. Authorization for the Tenants 02br
002. Authorization for the installation of 00central heating including shower, radiators, installation fees, and gas meter. 02br
003. Full address of the supply property 02br
004. Type of property, i.e. detached02br
005. Preferred location of 00meter02br
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00You can leave this authorization letter in our mailbox or if you prefer we can pop into your office tomorrow at any time. Once we'll get this letter we will proceed with the payment of these month rent and we will arrange the Gas compnay visits to the premises. As we have said in all the previous emails 00that we've sent during the last 2 months, 00 we are not willing to wait any longer its going to be our 3rd month and we are still living in this desperate situation. 02br
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00We look forward to hearing from you,02br
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00Kindest regards,02br
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00Me0-