UBB.threads PHP Forum Software Community Forums UBB.classic UBB.classic 6 Support Disallow: Which URL?

I have a few forums that I don't want indexed by search engines. I entered the following into robots.txt but the forum is still being crawled:

Disallow: /ubb/Forum9/
Disallow: /ubb/ultimatebb.php/forum/9.html

What exactly should I put after Disallow: ?

Thanks

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