Problem with IIS and database connection

Hi,

I have developed a website using Access and C#. The website perfectly works on my workstation (OS: XP Pro) locally and remotely. But when I deploy it on a server (OS: Server 2003) it stops working for remote access. I mean I cannot insert, delete and update data, but select commands work fine. The strange part of it is that I do not even receive errors for not being able to insert or update. I can still run the application on server inside visual studio without any problems, so the connectionstrings, and commands are fine. Is there any special settings in IIS that I'm missing? How can I solve this strange issue?

Thank you,

Arash