Urgent Problems With Getting Site To Work At Hosts Server

Hi there.I have made a site with some *.mdf database files that works fine at home. I use Sqlexpress, but when i copy my files to the host server (ASP 2.0 SQL server 2005) the *.mdf file will not attach.I get the following error :       CREATE DATABASE permission denied in database 'master'.Could not attach file 'D:Websites***********.netApp_DataDatabase.mdf' as database 'Database'.I have tried with a lot of different connection strings but no one work.My current connection stirng is:         <add name="ConnectionString_Default" connectionString="Data Source=>>IP Number<<;Initial Catalog=Database;AttachDbFilename=D:Websites>>my path<<.netApp_DataDatabase.mdf;Integrated Security=True;" providerName="System.Data.SqlClient"/>Is there any problem just copying my files to the host server, and then correct the connection string. Is Sql Server 2005 able to attach a *.mdf file just as SQLexpress is.Please help me soneone . Time is running, and I am late with my project.p.s. I am the first using the host server setup with sqlserver 2005. There may be something wrong with theri setup.Thans RHJ