remote database connection issue
The simplest way to do this is give IUSR_[computer name] (where that is your web server machine) read/write access to the relevant database (use the datereader and datawriter builtin roles, DON'T use dbo).  

If you are using stored procedures, you will need to grant execute permissions to  IUSR_[computer name] as well.

In addition, eet you connection string to use a Trusted connection: 

"Data Source=myServer;Initial Catalog=myDataBase;Integrated Security=SSPI;"