Woodrow you can accomplish what you want by using the "Edit" button the resource and adding a SQL filter. I do not have the exact syntax off-hand but you should see some example filters when you expand the SQL filter near the bottom of the "Edit Resource" screen.
If you only want to filter the Server in question you can use something like below
Start with something like "Caption like 'SERVERNAME'"
If you do not want to show any down nodes in the resource you can use something like "Status NOT like 'Down'"
If you REALLY want to get fancy you can create a custom property that gets set when the server needs to be "monitored' or not and then filter based on that custom property.
Let me know if you still have questions about filters.