Self-Sustaining Back Up Using Apache

I recently installed Apache, MySQL and PHP to my local machine and am running WordPress locally.

I would really like to feed my blogs from various locations directly onto that instance of WordPress in their own categories. I could do exports/imports, but I’d have to update frequently.

I’d like to have all comments/tags/posts (not necessarily categories) to get dropped into a specific category on the local instance (Blog A, for example) via rss.

Also, I have an old blog that I have backed up via normal means that I am going to unpack and restore and then perform an export and import. Is it possible to import all posts into a specific category, not into the category structure that the blog has/had?

Any help would be appreciated.

Thanks!