Is there any apps to install on my windows server to monitor activity?

[DJMK4]

Im looking for a decent application which will run on my servers background to monitor activity, like say if someone transferred a file across from the server to a workstation or if someone is streaming media etc, not so much a packet sniffer but more of a universal tool.

Any help appriciated.

Thanks amigo's

 

[DJMK4]

Currently running Windows server 2003 at home, need to configure media streaming server but at the moment its just file shares etc. I just want to generally see how much the server is going to be accessed/streamed from. Some type of application or graph/tables with info on what is being accessed and by who.