custom archive page?

[carroc]

Hello - I think this is possible maybe with custom templates but I'm not sure where to start so any steps or advice would be great.

I want to have a category page (archive page) that shows all post from that category, but grouped by another category. example would be:

menu button = region

contents =
sticky description of region

header for type1

post = region/type1
post = region/type1
post= region/type1

new header for type2

post=region/type2
post=region/type2
post=region/type2

if this doesn't make any sense, apologies, and I will try to explain better.

thanks in advance for any ideas.