are you able to assist me to, how do i sort posts by some custom area, in wordpress 3?

should i create some custom fields, and add new area in db, or...?

tnx in adv!

No you don't have to produce custom fields.

Use a plug-in such as this: http://wordpress.org/extend/plugins/wp-post-sorting/

or get it done by editing your category file: http://codex.wordpress.org/Alphabetizing_Posts

You should use [cde] to sort posts by custom fields (also known to as meta key value pairs). Presuming you want to add the sorting to the present view's query, that you can do something similar to this:

query_posts