[url] Dead links?

I'm doing a bit of housekeeping on my website, and ran across a couple of dead
or possibly dead links.

If the owners of these sites are around, please contact me if the URL has
changed or let me know if your site is now defunct.
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The Dead/Non-responding URLs:

http://scivax.stsci.edu/~kotche/quote-board.html - I'm getting 403
Forbidden codes...

Tom Barclay's Non-violent weapons systems for SG2: 404 codes...
http://fox.nstn.ca/~kaladorn/sg2-nvw.html

The Firing Line - sg2 and ds2 - more 404s
                      http://users.mcmedia.com.au/~denian/index.html
                      http://users.mcmedia.com.au/~denian/pads.html

Colonial Marines/ Aliens SG2/ds2/ft page: 404s again...
http://steelhead.aecom.yu.edu/stuart/AliensUniverse/AliensUniverse.html

The addresses on my site only use.htm extensions, not.html, otherwise it
works.

Also, I moved the PADS in the last rearrangement to:
http://users.mcmedia.com.au/~denian/sg/pads.htm

'Neath Southern Skies - http://users.mcmedia.com.au/~denian/
Commodore Alfred K Hole - RNS Indy's Folly (CB)
Fleet Admiral Alberto Doyle - NKV Vesuvius (LFI)

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