That's a difficult question to answer.
In these forums we rarely recommend 'tune-up' utilities, or registry cleaners or such like, despite what might be offered elsewhere in CNET.
But that said, if I was replying to an XP user who wanted to look at customising their computer, I would offer "TweakUI for XP". It is from a recognised source, and is one we all know and trust. However, i am not recommending that to you as I know nothing about your computer.
In any case, TweakUI for XP doesn't tweak as in 'speed up' or 'improve performance'. Those utilities that say they do generally tend to amend, change delete or add Registry entries, and we know from our experience here with other posters what problems can be caused by the unsuspecting users who make changes to the registry.
So I am stuck with your question and i don't know how to answer.
Are you attempting to speed up or increase performance? If so I would suggest you tell us what problems you are having so we can consider what other suggestions can be made.
But if you simply want to customise your system in some way, then there may be safer ways to do that.
Mark
It was pointed out to me by a CNET email that Tune Up Utilities is a very good program. I downloaded it and like it very much. I love all the things that it can do with Windows etc.
I also downloaded Tweak Now Power Pack and I like it too and it is free.
Does anyone have a suggestion to me as to what one I should use? Or should I be using anything like either one of these programs? I don't know much about these things, so I am asking the experts.
I really appreciate any help anyone can give me.
Thanks for much.

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