Ok it is all very interesting but I'm a complete no nothing about this stuff. I'm running a Dell Latitude E6410 from 2009. I has Intel(R) 2.53GHz Core(TM) i5 CPU 2.53 GHz, Installed memory 4.00 GB (3.80Usable) 64 Bit operating system. Can I run Zorin Lite on this? Next question (remember I'm completely un-knowledgeable) what happens to all the programs I've got loaded, basic Windows Office etc. and Avast Software. Do they stay on the computer and I just run them or how does that work. I really appreciate your help.