Microsoft DynCache ".reg" settings

Setting: x64 box,  16GB RAM, sql 2005 x64  std. Max sql memory setting 12GB.  Sql often uses more than this setting (but < 13GB).  Found this URL:

http://www.microsoft.com/downloads/details.aspx?FamilyID=e24ade0a-5efe-43c8-b9c3-5d0ecb2f39af&displaylang=en


Downloaded file and found this statement:

"Import the DynCache.reg registry file.  This registry file contains default settings that you will probably want to modify.  "

I've reproduced the .reg file below

>>>

ows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DynCache\Parameters]
"BackOffMBytesOnLowMemory"=dword:000001f4
"MaxSystemCacheMBytes"=dword:00000000
"MinSystemCacheMBytes"=dword:00000064
"SampleIntervalSecs"=dword:0000003c
"CacheUpdateThresholdMBytes"=dword:00000064

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DynCache\Parameters\Notepad]
"AdditionalBackoffMBytes"=dword:0000000a

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DynCache\Parameters\sqlservr]
"AdditionalBackOffCounter"="\\SQLServer:Memory Manager\\Total Server Memory (KB)"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DynCache\Parameters\System]

>>>


Can anyone please clarify those settings that, according to Microsoft "you will probably want to modify.  "
I don't have the slightest idea what to do with that file! (It Microsoft now into comedy?)

TIA,

Barkingdog