Time and Date are but tiny slivers in the vast woodwork of Windows XP command options.  For help with Windows XP commands, do this:
    - Start Menu / Run... / type (or copy & paste) hh.exe ms-its:C:\WINDOWS\Help\ntcmds.chm::/ntcmds.htm  / press ENTER
    - double-click Command-line reference and read away
    - take two Tylenol and go lay down

    ... I take it back... make it a handful.

    ... maybe a whole bottle

Here are instructions for copy/pasting text to and from a command window using the mouse buttons:
    - Start Menu / Run... / type CMD / press ENTER
    - left-click the caption button in the upper left-hand corner and choose Properties
    - make sure the Options tab has the focus... if not, click it
    - under Edit Options, make sure there is a checkmark next to QuickEdit Mode... if not, put one there and click OK

Now, whenever you want to copy text from another Windows XP application into a command window, highlight it by left-dragging your mouse over the text and choose Copy from the Edit  menu or right-click the highlighted text and choose Copy from the context menu (remember not to highlight anything before or after the command, including blank space).  Go to a command window as already described and tap your right mouse button to paste the text, or choose the caption button in the upper left-hand corner of the command window, click Edit, then Paste.

You can also copy text from a command window and into another Windows program by left-dragging your mouse over the text, releasing the button, and pressing ENTER.  Note that this only works if QuickEdit Mode is enabled (see further up).  The other option is to choose the left caption button / Edit / Mark, then left-drag the mouse over the text, release the button, and press ENTER.  Then go into most any Windows program and choose the Edit menu / Paste (or right-click / Paste from the context menu).

Clearer than mud?  I hope so... I tried. :)

These are good places to visit, especially if you're new to using the prompt and commands in general:
    - Windows' Command Line Puts You in Control (PC World)
    - Fast Windows Navigation Is a Command Performance - Improve your Windows efficiency by typing commands instead of clicking the mouse (PC World)
    - Command Prompt Options (Microsoft)