Quickly Removing Dynamic Pages

Google doesn't seem to let me follow its instructions...

[VKI_seo]

Is there a quick and easy way of removing dynamic pages from the index? We recently set it up so that the dynamic strings would be cut out of the URL, but Google is still holding on to URLs that are dynamic from before the change.

I tried to remove the pages according to the instructions on the Google removal page:

"Disallow patterns may include "*" to match any sequence of characters, and patterns may end in "$" to indicate the end of a name." ... "To remove dynamically generated pages, you'd use this robots.txt entry:

User-agent: Googlebot
Disallow: /*?"

So, I did that, and then went to the URL removal page, and Google tells me this:

"URLs cannot have wild cards in them (e.g. "*"). The following line contains a wild card:
DISALLOW /*?"

Am I doing something wrong here?

[twebdonny]

We did the same route, got the same message...ps, I wouldn't leave that robots text file like that, our main page index.htm, disappeared shortly therafter, and just has recently returned after we removed the robots entry...

[VKI_seo]

Do you have any suggestions on what WILL make those pages go away? I'm concerned that it's tripping some kind of duplicate content filter, as nothing on the page changes when you access it with a dynamic URL.