I need some help in displaying posts that are in TWO categories. What makes it a little tricky is that i'm trying to write some code that asks wordpress to show posts that are in the category of 'best-sellers' AND the category ID of the current page. For example, if i was on the category archive page of 'sport', i would like wordpress to get the category ID of that page, and then display posts that are in that category, and also in the category of 'best-sellers'. The result would therefore be a page showing best selling sport products (posts). Can anyone help me in achieving this? Thanks.