How do I change the default Windows Install Disk Location?

After installing Windows 2000 or XP, if I ever need to add a component to it (like DHCP etc.) it always asks me for the CD, even if I copy the i386 files to my local drive. Can I fix this?

Yes you sure can.  

1. Open the registry editor and go to

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup

1. Highlight the Setup folder.

2. On the right pane, locate the SourcePath.

3. Double-click the SourcePath and replace the drive letter in the box to C:\ (if you copied the files to your C:\ drive). Make sure it's C:\ and not C:\i386.

4. Close the registry editor.

5. If the system ever needs files from the i386 folder, it will automatically look in the C:\i386 folder.