Click on the images below to link to some of the web's best modelling sites
IPMS Wellington - it's a Yahoo site. You'll need to register to have full access to images and the forum.
Hyperscale - arguably the best modelling site on the web. The focus tends to be on aircraft but armour features as well.
Aircraft Resource Center
Modelling Madness
IMPS Stockholm - the colour charts are really helpful for those trying to figure out which Tamiya or Humbrol colour to use