Question : Default Website in IIS on Server 2003 is stopped and wont start

I have a server 2003 server and I have been trying to access our OWA on the server (it is an exchange box).  I was checking IIS and noticed that the default website in the IIS control panel says (Stopped) next to it.  I tried restarting it but everytime I do the system responds by saying a The Process Cannot Access the File because It Is In Use By Another Process.  

Any ideas as to what process is using this and how to release it.

Thanks.

Answer : Default Website in IIS on Server 2003 is stopped and wont start

It could be that the file you are trying to move has been locked by another process or another file has a handle on it.  Thus, when you move it, it throws the exception.  If you want to see which process is currently accessing it, then there is a tool, called Process Monitor, which will tell you which program is accessing it.  You can get it from http://www.microsoft.com/technet/sysinternals/utilities/ProcessExplorer.mspx
As a side note, was it intentional that it only moves the file if the destination file already exists, as the function at the moment copies the file, thus not causing any error, if the destination file does not exist, and only moves if the destination file does exist?