Windows Server 2003 MIBs don't work

Hi folks,

We're currently evaluating OpManager for our organization. There are several custom SNMP monitors I want to setup utilizing dhcp.mib, ftp.mib, http.mob, and inetsrv.mib, which are all found under c:\windows\system32 on a Windows Server 2003 install.

I copy these MIB files to the $OPMANAGER\mibs\ directory. When I attempt to "Load MIB" within OpManager's MIB browser, it fails trying to load any of these MIB files with the error: "Error parsing MIB: foo.mib".

What's the deal? How do I load these MIBs so I can start monitoring IIS6/etc stats? Why aren't these included in the OpManager product by default? Any help appreciated.

Thanks :)