Back then there was no clients, almost no content, even current domain was not registered. Everything we know is when Goblocks And DynaBlocks domains were registered.
Besides it, David Baszucki also have/had website where he mentioned project "eBlocks" - "stealth mode video game company".
Most likely (if not obviously) Roblox was only being created during this year and first half of next one, so the pictures from first DynaBlocks mockup might be a screenshots from 2003.
I'll provide links and images later
Come back later!
Come back later!