Sorry I'm jumping in so late here, but if anyone's still listening... WinPatrol
is an excellent task manager utility that, among its numerous useful functions, lets you choose the delay intervals for startup applications.
I now prefer AnVir Task Manager
, with similar functionality. However, AnVir's main drawback, in my opinion, is that the startup delay is not configurable -- it's 1 minute for all startup apps you choose to delay.
Both come in free and paid versions. I briefly reviewed WinPatrol in post #11
of my utilites blog, and AnVir in post #57
I hope this is helpful.