As a not-too-experienced computer user, I hope hope someone can answer these two questions. Do you have to uninstall an older version of MRUBlaster in order to put in a more updated version? Why does MRUblaster have to be updated? In other words, are there types data from "outside" the computer (web sites? e-mail? downloads?) that the MRU Blaster has to be kept up-to-date on, and if so, what? I'm very curious about this.