Open Categories URL With an ID

Hi,

I need to open my categories and Taxonomy with an ID in url just like the post with IDs (http://site.com/?p=112)

is there anyway to to open the category or taxonomy like same.

I tired http://site.com/?cat=144 or http://site.com/?sub-cats=400

On category page its showing me the full archive with all posts from the categories and on custom taxonomy its showing error 404.

My concept is simple, i am making a data.xml file for autocomplete function but the issue is it will be last if the urls are like this

http://www.site.com/dir-cats/advertisers

and it will save my file it can be done by this

http://www.ekarnal.com/dir-cats/144

Any help?