128 MB of memory isn't a lot these days. If you want to see a performance boost, upgrade to at least 512 MB. Like everyone said; disk cleanup and defrag will help speed up your computer's performance.
Check out this tip from Microsoft.
http://www.microsoft.com/AtWork/getstarted/speed.mspx/
Agreed; a Windows XP system will run a bit slow with only 128MB of RAM. 384MB should be adequate if you aren't running any resource-hungry applications.
dlh6213
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