http://www.cultpens.com/
Great source of very useful pens, the Artline series particularly useful
All you need in the way of basing items, steel paper, magnatised sheets flocks etc
Useful source for steel bases
Providers of all sorts of MDF bases just about every size you can think of
An excellent source of uniform details and painting guide.
Wonderful range of buildings in all scales
"La Garde", Rules for mass battles, in French available at Wargame Vault site. We are working on an english version.
http://www.lagarde6mm.com/