So, I made a site, and it keeps redirecting to the cgi home page. How would I, say, change it to index.php? I don't think I had this problem before on my other site (same host).
Just clear your browser's cache and history entry for your site, then restart your browser before visiting the page again. The default page is "sticky" in caches. If that doesn't work, then your ISP may have "helpfully" cached the page on their own servers to "improve performance". If that happens to be the case (you can test that by using a different browser if you don't trust your main browser's cache-clearing abilities or thinnk you may have missed a step) you'll have no choice but to wait for it to age out of cache (usually 6 to 24 hours).