Disable IPv6

[tazmaniandevil]

"Why would you want to?" I know, I know.....

By adding the following registry entry, IPv6 can be disabled in Vista.

[HKLM\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters] 
"DisabledComponents"=DWORD:000000FF

I have tried adding this as a RunSyncronous item, but the entry does seem to appear in the registry of the finished machine.

Does anyone have any idea how to accomplish this easily?

In case anyone is interested, or if I have made some glaring error, here is the runsyncronous entry:

reg add "HKLM\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters" /v DisabledComponents /t REG_DWORD /d 000000FF /f