Charles is generally pointing to the right direction - here are my additional two bucks - 1. Run chkdsk on the drive 2. Delete temp files 3. Defrag.
Disable all the unneeded services - particulary the indexing service - its a resource hog without doing much, empty your temp folders, run chkdsk...
Hm. That's a new and interesting one. Had not even thought about installing Win XP on a desktop without cd rom and here we are talking about a...
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