How do you close windows if they lack the red Close button on the upper left?

I opened up iChat for example...and the application then wants me to sign in or signup for .mac or whatever.  Well I don't really want to do that I just want to close the app.  But there is no red button to tell the thing to quit.  I tried command-click and option-click and ctrl-click to see if it would give me an option to close the app.  But no go.  Boot Camp Assistant has the same behavior.  I open it just to see what it's about.  But then there is no way out.  Ease of use?
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amigan_99Network EngineerAsked:
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lpxtechCommented:
Command-W will work.
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jhyieslaCommented:
Most, but probably not all, windows in OS X that don't have the red close button usually have a cancel button that you can use.  If not, you should also be able to right-click the app icon in the Dock and do quit from there.
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AJViennaCommented:
Hitting the Escape (Esc) key may help as well.
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amigan_99Network EngineerAuthor Commented:
So the ctrl-w appears to work in some instances but not others.  I'll have to try the other two techniques when I get home.  Thanks!
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amigan_99Network EngineerAuthor Commented:
I find the cmd-w works in many cases but not all.  Thanks for the reply.
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