The Registry parameters for DHCP clients are specified under the following key:
..SYSTEM\current\currentcontrolset\services\DHCP\Parameter\<option#>
The Option# keys are a list of DHCP options that the client can request from the DHCP server. For each of the default options, the following values are defineC:
Data type = REG_SZ
Default = Depends on the Registry location for the specific option
Specifies the location in the Registry where the option value is written when it is obtained from the DHCP server. The "?" character expands to the adapter name for which this option value is obtained.
Data type = REG_DWORD
Default = 0x7
Specifies the type of Registry key for the option.