It's a Leitz Valloy II

Can I also use regular lightbulbs available in supermarkets?? Or does it have to be a special type of bulb?

I learned that in Europe regular lightbulbs will be banned by 2012. All lightbulbs will be replaced by energy saving lightbulbs. Not sure if you can use energy saving lightbulbs in an enlarger, as they need warm up time. Anyone have experience with them?