For the record, I've been playing with powershell for about a week now, and I fucking love it.

Check out my latest function, I am so awesome.

Useful for adding to your profile

(if you haven't rtfm'd, then: new-item $profile -itemType file; notepad $profile. The rest is up to you)

Anyway, it brings up my favorite editor (notepad2), and re-starts powershell (using a path to my own local shortcut) but -- and here's the cool bit -- only if you actually changed your profile

# Launches an editor for this file, and re-starts
# powershell if changes were made
function pro {
    #make a backup file
    cp $profile ($profile + ".bak")

    # piping (non-existant) output makes script wait for exit
    &"c:\Program Files\notepad2\Notepad2.exe" $profile | out-null

    # If user made changes, re-launch shell.  otherwise do nothing
    $old = get-content $profile
    $new = get-content ($profile + ".bak")
    if ($null -ne (
            Compare-Object -ReferenceObject $new -differenceobject $old
                  )
       ) {

        rm ($profile + ".bak")

        # user exited editor, re-start powershell
        &"C:\Documents and Settings\All Users\Start Menu\Windows PowerShell.lnk"

        # quit this particular shell
        exit
    }
    rm ($profile + ".bak")
}