Friendlytypename ?

[Special Kei]

This is actaully my first post here. I've been comming here and searching for what I wanted to know since before I even signed up. I've created 3 unattended windows installs using b the sneaky's pack, ryanvm's pack, wmp10 slipstream, xplode. Its only because of this place iv managed to completely customize windows from the install, including probalby 100 reg tweaks, many programs silent install, and iv made custom background, billboards, logons, etc.

I plan to post the complete thing when I'm finished, mostly just the custom stuff.

But iv come to a point where I cant find anything. I'm trying to change hkey_classes_root extensions. basically thing

[HKEY_CLASSES_ROOT\MKVFile]
"PreferExecuteOnMismatch"=dword:00000001
"EditFlags"=hex:00,00,01,00
@="Windows Media Audio/Video file"
"FriendlyTypeName"="@C:\\WINDOWS\\inf\\unregmp2.exe,-9909"
[HKEY_CLASSES_ROOT\MKVFile\DefaultIcon]
@="C:\\PROGRA~1\\WINDOW~2\\wmplayer.exe,-120"
[HKEY_CLASSES_ROOT\MKVFile\shell]
@="play"
[HKEY_CLASSES_ROOT\MKVFile\shell\open]
@="&Open"
"LegacyDisable"=""
[HKEY_CLASSES_ROOT\MKVFile\shell\open\command]
@="\"C:\\Program Files\\Windows Media Player\\wmplayer.exe\" /prefetch:7 /Open \"%L\""
[HKEY_CLASSES_ROOT\MKVFile\shell\open\DropTarget]
"CLSID"="{CE3FB1D1-02AE-4a5f-A6E9-D9F1B4073E6C}"
[HKEY_CLASSES_ROOT\MKVFile\shell\play]
"MUIVerb"=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,\
  6f,00,74,00,25,00,5c,00,69,00,6e,00,66,00,5c,00,75,00,6e,00,72,00,65,00,67,\
  00,6d,00,70,00,32,00,2e,00,65,00,78,00,65,00,2c,00,2d,00,39,00,39,00,39,00,\
  31,00,00,00
@="&Play"
"LegacyDisable"=""
[HKEY_CLASSES_ROOT\MKVFile\shell\play\command]
@="\"C:\\Program Files\\Windows Media Player\\wmplayer.exe\" /prefetch:7 /Play \"%L\""
[HKEY_CLASSES_ROOT\MKVFile\shellex]
[HKEY_CLASSES_ROOT\MKVFile\shellex\ContextMenuHandlers]
[HKEY_CLASSES_ROOT\MKVFile\shellex\ContextMenuHandlers\WMPAddToPlaylist]
@="{F1B9284F-E9DC-4e68-9D7E-42362A59F0FD}"
[HKEY_CLASSES_ROOT\MKVFile\shellex\ContextMenuHandlers\WMPBurnAudioCD]
@="{8DD448E6-C188-4aed-AF92-44956194EB1F}"
[HKEY_CLASSES_ROOT\MKVFile\shellex\ContextMenuHandlers\WMPPlayAsPlaylist]
@="{CE3FB1D1-02AE-4a5f-A6E9-D9F1B4073E6C}"

what does the FriendlyTypeName entry do? I dont much care about the unregmp2.exe since all things with mediaplayer use it, its the -9909 im more concerened about.

Thanks