If you need to reinstall WindowsXP in case some files are corrupted, and want to keep all your current installed applications and settings. You can save yourself from the hassle of going through step by step installation procedure for XP. to do so:

1. Start WindowsXP

2. From Start Menu > Run

3. Type X:\WINNT32 /unattend , where "X:" with the drive letter and path where Windows XP installation files are located.

4. Click OK