If it's automatic, simple as that don't be expecting ANY power. Seriously, don't.
Intake? nope, no power just sound. $50-$200
Exhaust? nope, no power, just sound. $200-$800
Headers? nope, no power, just sound and if O2 sensors aren't installed, you add problems. $100-$300
How does your car look at the moment? care to share exterior, interior and engine bay photos?
I'd recommend:
1) Work with what you have at the moment, clean everything, detail it all to the best of your ability, and repair any problems. Is there a CEL? Is it running poorly? Work on that before you modify it further.
2) Cheap functional mods, here's an album of the cheap and simple mods I put into my 99 DX
http://imgur.com/a/IKr0F
http://imgur.com/a/iuTND
3) Interior and Exterior? refer to link I posted below or shown in my signature.
4) Power? If you're new to the 'car club world' then it'll be a difficult task, especially if you're new to doing any mechanical work. If you really want to swap an engine, do as much research as possible, don't say "ill just do this, then do another later", no, complete your dream at once, no shortcuts.
Click the link in my signature, or here:
http://www.clubcivic.com/board/showthread.php?t=219682