There's this Spanish company called Iberparts who have had a persistent (some would call it spamming...) advertising campaign where they promise to send parts worldwide and promise (obviously) competitive prices.
I haven't ordered from them and have heard of only one guy here in Finland who has ordered parts from them (he had no problems), so can't recommend them fro mpersonal experience. But maybe worth emailing them and see what they have to offer?
Anyone here ordered anything from them and if so, what sort of experiences have you had?
Iberparts' website is
http://www.vigonet.com/quas/ingles/index.htm>
Then there's the Spanish company Neumarsa. They're a reputable company, but they require a minimum order of 3000 USD, which is quite big for a private person, so it would probably have to be a group order by a bunch of other enthusiasts. Unless you're interested in setting up your own Renault parts import business...

Their downside is that, although their prices are quite competitive, their delivery times can be very long because they get the parts directly from manufacturers and they wait until they have gathered enough orders for each manufacturer which can take time sometimes.
Their site is
www.neumarsa.com
Hope this helps.