If your phone model isn't listed as an option, don't install that ROM. It will be the end of your phone. If you visit the Skyrocket Q&A forum and the dev forum for, well, any phone, there are loads of tutorials on how to flash safely. Please read them first and follow their instructions, along with the ROM instructions, or brick.
Unless you want to prove how 1337 you are. Then, by all means, install the ROM and prove us wrong.