Confused about monitoring System Center Configuration Manager with Operations Manager in a 64-bit environment? If so then My Phuong Le over on the Configuration Manager Team Blog has a great post that should clear things up a little:
Some users have encountered 32-bit limitations in monitoring System Center Configuration Manager with Operations Manager. This post is intended to clear up confusion about what is currently supported and why.
By design, the OS operates in two distinct address spaces - 64-bit or 32-bit. System Center Configuration Manager 2007 is a 32-bit application. This is true for the RTM, SP1 and R2 releases.
J.C. Hornbeck | Manageability Knowledge Engineer