Im interested in security applications. I believe I need more than NOD+XPFW. RegDef cost 29.95. Is it worth the price? Is it easy to use? If I buy both RegDef and AppDef, what will the price be? Theres a free version for both. Will it do? Whats the difference? New versions soon? (Because then I wait) Do I still need CCleaner to clean and backup my reg? When both installed, do I need alternatives that can show me what processes are running, and to stop them from running? And do I need other alternative to manage what processes starts with Windows XP? Specially interested in how easy/or not to use.