I just installed my first Linux OS which is FC3. Here is a silly question.....If I upgrade to FC4 will everything I have established in FC3 be wiped out and I will have to installed everything again. In other words, if I install FC4 will it just upgrade the OS, or will it wipe out everything I did on FC3. The reason I'm asking is because I am a newbie to Linux and I just spent the last 10 days getting everything set up (graphics card, YUM, multimedia, etc.) If I install FC4, will I have to do everything all over again, or is it like the "other OS" where it just upgrades what I already have?