Risk rating is 0 for cash, 1 for the safest shares eg Glaxo, 10 for a distressed company that's most likely to go bust or a one-trick pony outfit (eg exploration, drug development) where the most likely outcome is failure.
Portfolio weight is the rough weighting I would use in my own portfolio.
Cost is realistic buy price on 31 Dec.
The data links are to Morningstar or Hemscott reports at 1 Jan 2012. I hold six of the eight shares: Soco International, Falkland Oil & Gas Ltd, Real Good Food Company, Software Radio Technology, Northern Petroleum &