I have faced a problem with my Windows 2003 Server

Hi Experts,
I have faced a problem with my Windows 2003 Server running SCCM 2007 native mode.
It has failed to provide recent updates to deploy into the repository.
I have tried several ways to get it ok.
I also visited several sites to get a remedy but no result.
If you have any idea for the issue, please help me to solve the problem.
Thanks in advance.
