KSPC plays exclusively non major-label affiliated artists, so they almost cater to underdog in theory. Call up and follow up on your submission too. Get a domain name for your band's official website, something that's fairly easy to remember. Get an email account strictly for band business. Make it sharp, and make it reflect what your band is like.
Websites are a great way to find out about any band.
Also, on websites, you have oodles of room to put everything you could ever want on them. This is definitely true. At the magazine I work for, it's generally a courtesy when artists or bands call ahead of time and alert me that they plan to send a package. They usually will pitch me on what the band is all about and let me know about upcoming gigs, releases and other related news, over the phone. After you send in the package, call up and follow up.