You would need to create your own vBulletin pages and put the HTML embed code ProProf's gives you into a custom template.

There is an article in the VB4 Articles section about creating your own vBulletin pages. It takes some doing but if you follow the instructions should not be a problem.

When I enter the embed code into the "Replacement" section as it appears above, it says:

The following BB Code replacement may not be properly formed. All HTML attributes should be enclosed within double quotes.

•<object width='630' height='580'><param name='movie' value='http://www.proprofs.com/games/crossword/swf/crossword_w.swf' /><param name='FlashVars' value='id={param}&level=easy' /> <param name='allowScriptAccess' value='always' /><param name='quality' value='high' /><embed name='proprofs_flashGame' src='http://www.proprofs.com/games/crossword/swf/crossword_w.swf' FlashVars='id={param}&level=easy' width='630' height='580' allowScriptAccess='always' quality='high' type='application/x-shockwave-flash'></embed></object><div style='font-size:10px; font-family:Arial, Helvetica, sans-serif; color:#000;'><a href='http://www.proprofs.com/games/crossword/' title='make crossword puzzle' target='_blank'>make crossword puzzle</a></div>

You can safely hit "Continue" it is safe and OK.

What does this mean:

In the embed code look for FlashVars='id=NUMBER and put NUMBER between the [crossword] tags.

And why is there a 2466 in between [crossword]2466[/crossword]

Proprof will give you a long embed URL... look through the URL because all you care about is the number that follows id= in the URL.

You then put that number and only that number between the [crosswords] tags.

So you have to always put that particular number in it? Isn't that the number that's already in the examples provided?

No that number is from the example URL... you take the number that ProProfs gives you on your own crossword puzzle- everyone's will be different.

I just went to ProProfs and made a new crossword- I don't see a link to the crossword given anymore- but there is embed code.

So go to the embed code they give you for example:

You still need the number after id= so in this case (in red) it is: 11358

So the crossword bbcode would be

[crossword]11358[/crossword]

So I need to go to that website and then make my own puzzles?

yes, that is the point. To embed puzzles you make on their website.