Your mod already supports minecraft 1.4.2 already but IC² itself not?
Is your mod intended to be used/work without IC²?Or is there already some IC² version available that works with 1.4.2?
Yes it work without IC as PoweSource can use Buildcraft or UE but only in creative most recipes and features need IC2 ( UU-Matter-> Forcecium, Forcecium in Massgenerator etc)