What's the best way (or tool) on the Windows (Vista) command line to get size and modification time for a file on a remote webserver, without downloading it?
On Linux, I often use curl with the --head parameter. It is available for several operating systems, including Windows.
[edit] related to the answer below, gknw.net is currently down as of February 23 2012. Check curl.haxx.se for updated info.