How can you speed up Windows XP program performance while another program is performing I/O operations?

On each of 3 PCs I use, Windows XP frequently slows to a crawl during various I/O operations (Disk access, network file transfers, network printing). Program windows are slow to respond to menu pull-downs, the mouse stops moving for [...]

How to improve laptop performance and speed

I am using Compaq Presario V6608AU Notebook with Microsoft Windows Vista Home Basic OS. The overall performance is showing very slow. I was upgraded the RAM 1GB to 2.560 GB still I am facing the same issue.
Kindly advise how to improve my laptop performance and speed.

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With pc [...]