www.activewin2k.com and http://www.tipsdr.com/windows-2000-tips-2.html

How do I check to see how long Windows 2000 has been up?
Use the command line utility called UPTIME. You can also use it to check remote machines.
UPTIME, Version 1.00 (C) Copyright 1999, Microsoft Corporation
Uptime [server] [/s ] [/a] [/d:mm/dd/yyyy | /p:n] [/heartbeat] [/? | /help]
server Name or IP address of remote server to process.
/s Display key system events and statistics.
/a Display application failure events (assumes /s).
/d: Only calculate for events after mm/dd/yyyy.
/p: Only calculate for events in the previous n days.
/heartbeat Turn on/off the system's heartbeat
/? Basic usage.

How to change the size of the virtual memory paging file
1. Open System in Control Panel.
2. On the Advanced tab, click Performance Options, and under Virtual memory, click Change.
3. In the Drive list, click the drive that contains the paging file you want to change.
4. Under Paging file size for selected drive, type a new paging file size in megabytes in the Initial size (MB) or Maximum size (MB) box, and then click Set.
If you decrease the size of either the minimum or maximum page file settings, you must restart your computer to see the effects of those changes. Increases typically do not require a restart.

How to convert a volume to NTFS from the command prompt
1. Open a command prompt window.
2. In the command prompt window, type
convert drive_letter: /fs:ntfs

How to Enable Auto-Complete Feature In The Command Prompt
It'll turn on the auto-complete feature so when you type 'cd d' and hit the tab key, the console will display the list of folders that begin with the 'd' letter, and you'll be able to choose the one you're looking for, right from the console instead of typing its path.
1. Log on as Administrator,
2. Click Start, and then click Run,
3. Type Regedit and OK,
4. Double click HKEY_LOCAL_MACHINE,
5. Double click SOFTWARE,
6. Double click Microsoft,
7. Double click Command Processor,
8. In the right pane of Regedit, double click the 'CompletionChar' DWORD value,
9. Type 9 click OK,
10. Close Regedit,
11. Click start/programs/accessories/command prompt,
12. Type 'cd d' and hit the Tab key: the first folder that matches the 'd' letter is displayed (you can switch from folders pushing several times the Tab key).

How to defang Win2k SP3's auto updating
The register is reporting now they can tell you how to remove the "features" Microsoft has added to prevent the possibility of snooping on you in the future with Windows 2000.
Go to Start, then run services.msc. You can also do this via Control Panel, Administrative Tools, Services. Find Automatic Updates, and change startup type to disabled.
Then run gpedit.msc, the group policy editor. Go to User Configuration, Administrative Templates, Windows Components, Windows Update. On a fresh installation with SP3 applied this will show up as not configured, and somewhat counter-intuitively, in order to remove access to Windows Update, you enable it. Notice in passing that it's tagged Remove access to use all Windows Update "features," which we presume is one they can fix in SP4.
In English, this means you'll have to seek out patches and security fixes yourself, and install them by hand. But you don't mind that, do you? Back in Services, you may also want to switch Background Intelligent Transfer Service to disabled.

Removing applications from Add/Remove Programs
On occasion, you'll find that an application listed in Add/Remove Programs even after you've uninstalled it from your computer. You can remove such applications from Add/Remove Programs by editing your computer's registry. Begin by running Registry Editor and accessing the key
HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionUninstall
You'll find keys listed below the Uninstall key that correspond to the applications you see listed in Add/Remove Programs. You remove an application from this list by selecting its key in Registry Editor and then deleting it.

Slow Network Browsing?
Windows 2000 has a problem where when you browse network drives, it would search the scheduled tasks folder, thus slowing down the response when browsing your network drives. Deleting a key from your registry will speed up network access, but, as always, be sure to back up your registry before making any changes.
• Open up regedit.
• Navigate to HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/Current Version/Explorer/RemoteComputer/NameSpace.
• Find the key named {D6277990-4C6A-11CF-8D87-00AA0060F5BF}.
• Right click on it and select delete, ok to confirm.
• Restart your machine to allow the change to take affect.
Enjoy the improved response from your network drives.

Use System File Checker to Solve Problems
System File Checker (sfc.exe) is a command line utility that scans and verifies the versions of all protected system files after you restart your computer. If System File Checker discovers that a protected file has been overwritten, it retrieves the correct version of the file from the %systemroot%\system32\dllcache folder, and then replaces the incorrect file.