making windows OS fast

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i am using windows o/s for the past 7 yrs.Its a excellent OS in all ways.Its user friedly and smart.It has many advanced features.It has many features that can be done through unix which is a command line os.Many computer geeks will be a part of the MYLOT team...can u suggest here some basic tips for the beginners to make windows a fast O/s???tips can include making shudown fasterm,file opening fastly and many common things which appears to be slow in the O/S..