Changing name for Multiple files at one shot.

To avoid unrecognizable file names of our photos after downloading from our digital cameras,
We can rename several similar files at once with the following procedure. This will also works for renaming other types of files.
1.Open the My Pictures folder. (Click Start, and then click My Pictures.) Or open another folder containing files that you want to rename.
2.Select the files you want to rename. If the files you want are not adjacent in the file list, press and hold CTRL, and then click each item to select it.
3.On the File menu, click Rename.
4.Type the new name, and then press ENTER.

Disabling startup programs

To disable programs from automatically starting, you will need to do some registry tweaking.

Go to Start > Run and type Regedit; the registry editor will open. Here, go to HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/Current Version/Run. Here, look for the program strings of programs that you don't want to load at start up. Right click on that string and select Delete. The program will not be loaded during the next start up.

Note: before you do anything to the registry, always make a backup, so you can restore it in case something goes wrong.

Free system resources

We know that Windows 2000 is resource-hungry. To free up some memory-usage, go to Control Panel > Administrative Tools > Services. You will see the list of applications. From this list, look for applications you do not use. Double-click on them, and disable those services from the window that pops up.