I work 9-5 as a software developer for a financial company, so I only do graphic design in my own free time. So far I havn't been charging anyone for anything apart from the poster I made for 20 euro last week (
http://www.dzyne.net/xtra/markkav-1.pdf).
I guess if I start making a regular income from it I'd wanna be legit. I'd imagine that's expensive though :(