>I was mistaken in my previous message. I was using SQL Server authentication for connection
>
>Here is what I found in my notes of how I get it done:
>
>1. Enabled Mixed Mode of Authentication (SSMS -> Properties -> Security)
>2. Enable the TCP/IP protocol using the Surface Area Configuration Utility In SQL Server 2008 this is part of the SSMS
>3. Add new log-in (in SSMS Security -> Logins -> New Login. Set new login to have SQl Server Authentication.
>4. Give this new log-in permissions to your database.
>
>That is pretty much what I did and it worked.
>
>Let me know if I can help more.

Thank you, I will try SQL Server authentication.
BTW, how do you build the connection string to connect to the SQL server? If a user has to enter a password for the SQL server authentication, do they enter it when they login or you have some sort of config file where you keep the connection information? I am struggling with the security part. Another question are you keeping your connection open throughout the life of the application?

Thank you again.

>

>
>>>What I had (and still have) is the same situation as you do, XP pro OS attempting to connect to SQL Server 2008 on Win 7. I only needed it for testing something so I don't have this connection working now. If I remember correctly I solved the problem by using Windows authentication. Let me see if I have any notes left from that test and I will provide you with more information later.
>>Thank you, I would really appreciate any information.
>>
>>>
>>>>Hi,
>>>>Can you please share how you have solved the connection issue? I have SQL 2008 installed on Win 7 machine and want to run an application located on a laptop with XP pro OS, connecting to the data on the SQL server. I would prefer using windows authentication.
>>>>
>>>>Thank you in advance
>>>>
>>>>>Hi,
>>>>>
>>>>>I am stubbornly trying to connect my app from one computer to the SQL Server installed on another computer on my small LAN. With every step I think I am getting closer (just like to the horizon <g>).
>>>>>
>>>>>Anyway, in the last attempt I am getting a message "Login Failed for user 'ComputerName\Guest'" The "ComputerName is the computer where SQL Server 2008 resides. Since SQL Server is configured for Windows Authentication I am figuring (guessing) that SQL Server "sees" me as a "Guest" user. What do I need to change (in Windows Users or SQL Server) to make SQL Server 2008 allow the access?
>>>>>
>>>>>TIA.