Use the Services MSC to view dependencies. If any need changing - fire up regedit
Go to : HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\<Service name>
To create a new dependency, select the subkey representing the service you want to delay, click Edit, and then click Add Value. Create a new value name "DependOnService" (without the quotation marks) with a data type of REG_MULTI_SZ, and then click OK. When the Data dialog box appears, type the name or names of the services that you prefer to start before this service with one entry for each line, and then click OK.
Source URL: http://support.microsoft.com/kb/193888