>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.