You know what, I actually agree with oregonhunter, provided that his statement actually means "I don't help Nazi enthusiasts that I don't know."
I know I'm going to get flamed for this statement, but it's not like you're collecting Barbie dolls. Given that the Nazi/skinhead culture intersects the Nazi militaria collector culture in places, if you're a Nazi militaria collector it is safe to say that it is significantly more likely that you are a Nazi supporter/sympathizer. Yes, I know that the vast majority of Nazi militaria collectors are not Nazi sympathizers, but it is significantly more likely that they are.
Period.
I speak German a little, but I'm not going to use it to help a Nazi militaria collector unless I personally know them. I know that my belief may not be rational, but it's my choice. My aunt's dad lost his sister to Buchenwald.
(dons flamesuit)