when trying to locate parts, it can really help to have at least an idea of where you are, so people aren't pointing you at parts that are clear acrose the country, unless you really like paying shipping.
I find most of my used parts on
car-parts.com I used it to find a new trasmition for my civic vx that was 15 miles away, and half the price of what I found elsewhere, searching sites like craigslist, Ebay, and freecycle can alwas help, also if you find someone who has a civic vx for sale that has been altered, and no longer has the stock wheels, contact the people and ask them if they can help you out with locating them, they might be sitting out behind there garage on the way to the trash.
what others said about tires seems to be true, stock tires are 165/70-13" and most compenies no longer make that size, so most tire stores will try to sell you 175/70-13" those tires would be wider, and produce more drag then you might be looking for, a better option would be something like 155/80-13", they should fit perfectly, and if they are a quality tire, provide more then enough grip.