I decided to run a Swords & Wizardry adventure put out by Frog God Games called "The Tomb of the Iron God". Seeing as it is an OSR system and adventure, it really didn't need any outright conversion on my part. Only thing I really did was create some of the monsters that were in the adventure but not in the Dominion Rules game system book. Ok, and create a small campaign map to place it and any further adventures in the future.
Oh what the hell...here's a map of it.