Not sure which to use for what? Go here: http://support.caig.com/faq.php?cat=12 Don't know where to get the stuff? This will help: http://www.caig.com/link.htm The best prices I have found are at tapewarehouse.com and partsexpress.com, both on the dealer list. This is just my way of helping those who have done so much to help me. Good luck and 73, Dick KF4NS Keep the glow!