Great Dive Centre on Zante
I spent a couple of weeks on Zante (Zakynthos) and did my Advanced Open Water certificate with Euro Divers based on Laganas beach. I can Very Highly recommend these guys as being very proffesional, organised and above all fun! wether you are doing your first ever try-dive, a couple of fun dives or a full course, this team run by owner Viou and the lovely Magdalena can make sure you dive safely while having fun.
Just look down Laganas beach in the morning before they head out for the day's diving or after 5pm when they usually get back and you can't miss the big yellow dive boat, pride of the owner.
They are fully PADI registered (one of the few on the island) and I willy be heading back to dive with them once again. They can provide all or any of the equipment you may need, with advice to match.