well...its all windows stuff...
heres some things i found out rtunning tests
*Compatibility mode paging reduces overall system performance.
Windows Millennium Edition was unable to identify a real-mode driver or memory-resident program loaded in your Config.sys or Autoexec.bat file. You will see another message that lists the name of the driver or program causing the problem.
Because Windows Millennium Edition could not identify the driver or program, it has switched to MS-DOS compatibility mode to ensure the program will run. However, this decreases overall performance. To improve performance, remove the program or driver causing the problem, or contact its manufacturer for an upgraded version.
Drive X is using an MS-DOS compatibility mode file system.
This problem often occurs on more than one drive. Usually it is caused by a driver listed in the Config.sys file that Windows Millennium Edition does not recognize and that is related to the message Compatibility mode paging reduces overall system performance. If you see both messages, see the Help for the Compatibility mode paging reduces overall system performance message first.
If you only see the message Drive X is using an MS-DOS compatibility mode file system on one drive, that drive is using an MS-DOS compatibility (real-mode) driver, which might reduce that drive’s performance. Contact your hardware manufacturer to see if an updated driver is available for your drive. If not, the drive’s performance might be less than optimal, but you can still use it.