@ Wenda: Do you have the retail version of Deus Ex 2 - Invisible War? I have the Steam version and it plays fine on Windows 8. But maybe that's because it doesnt use whatever proprietary DRM retail uses, just Steam.
If you want my personal view on it, it's OK to use no-cd cracks as long as your copy of the game is legit, regardless of the law.
As for your question,yes, applying a patch to your legal copy is still illegal. It's kind of a gray area as far as the laws are concerned. I live in the States, I have heard that Australia has more stricter laws regarding piracy, DRM circumvention, etc. So it varies slightly depending on location. And of course here we have the Digital Millenium Copyright Act, which in a nutshell states that circumventing DRM is illegal, except under very narrow circumstances.
I really dont think the admins will ban/warn you simply for mentioning cracks and your use of them, any reasonable admin can tell that we're not advocating piracy. I cant speak for them, but if they do comment it will most likely be just to say that we should mention cracks/piracy as little as possible, and only in a way that isnt advocating it. It's one of those things that are better left unspoken when it comes to many forums, because every community has it's own rules and the majority of sites lean toward the lawful side of things. We all know they are used, we can just wink silently at each other without saying anything. The forums still have to cover themselves as far as the law is concerned, that's why many prohibit/restrict/curtail the discussion of said topics.