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Hi, There are lot of software that people install that work only when opening them (like open office and others). As for open office and LiberOffice, do they affect the windows performance if they are installed, but not opened (Do they use any resources while not in use)? In general, softwares that are installed and in order to use them you must open them, do they use any resources while not in use? Thanks, Dave

I'm going to be doing a science fair project in which I test the effectiveness of various windows registry cleaners on improving a computer's performance. Since I'm using a computer that's about seven years old and has experienced a TON of use, I expect to be able to see the effect of the cleaners pretty easily. Anyway, the reason I've come to this forum to talk about this is this: I don't know what aspect of the computer's performance is actually altered by the cleaners, other than the fact that they will fix errors in the registry. Will I see a change in the amount of processes/cpu usage? The physical memory? The kernel memory? I understand that in asking this question I will look like a computer noob, which I am for the most part. But I don't really care, I just need to know the answer so I can create a hypothesis and begin my project. Please answer soon! -Onyk