If you use Perfmon, it can get really old looking at all of the vertical lines in the graphs. Here is a tip that will revert back to the old view we had in the NT4 days.
283110 Vertical lines are displayed in the Sysmon tool that obscure the graph view
Also, if you would rather see that you have 2,000,000 MB of RAM instead of 2000000, you can add another registry key that adds the commas.
300884 HOW TO: Display Comma Separators in the Windows Performance Tool in Windows XP