[ic] How to build product categories?

[interchange-users@icdevgroup.org (Gerry Kirk)]

I see that the product table has product group and category fields. Is
product categorization limited to 2 levels? What if I want to do
something like

Parts
   Product type (vacuum, appliance, ...)
      Brand
	 Part type (hose, bag, ...)
...

for users to browse and search?
 
Would I create a group called Parts, a category of part types and add a
product field called brand, then use brand as a filter? Is there already
a place for brand that I'm not seeing? Is it possible to add additional
fields?
      
Thanks,
Gerry

-- 
Gerry Kirk
IT consulting for positive change
http://prime.sourceforge.net

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fax 780.401.3517