I don't think anyone expects support for older mods to last forever David and it's certainly not your fault that the original crosswords site went dormant. It happens, but some us old 3.6 hacks like this mod and it's easily fixed with a simple template edit.
First go to bestcrosswords.com and click on the web syndication link.
Register an account and you'll see 2 options, the
code generator and the
customization guide. I would recommend adding code from both of these to your "vbcross" template.
Next edit your vbcross template.
Find:
Code:
<iframe src="http://www.onlinecrosswords.net/externalplay.php?code=6d2e501ce15b4416853f64e62a6355e2&lang=EN" width="570px" height="700px" name="Crossword" scrolling="no" frameborder="0"></iframe>
</td>
</tr>
<tr>
<td class="alt2" style="text-align:center">
Instructions: Click on a clue below the puzzle to activate the word in the puzzle.<br />
You can also click on the puzzle location to activate the word and the clue will be highlighted below.
To enter the word, start typing.
Replace that with the code from bestcrosswords.com and tweak the customization code to match your site. You should be good to go.