What sort of parts are you looking for?
On the components front the German office of Farnell is pretty good (
www.farnell.de) the nice thing about them, apart from the fact they are just south of Munich, so overnight delivery is no problem and that their German website is almost identical to their English one (
www.farnell.co.uk) with the same part numbers so you can browse the English site. find the bits you need, then simply drop them into the German online shop.
YL6