Internet Explorer 6 does not support fixed position. If you need compatibility with Internet Explorer 6 for your curlypages you must use absolute positioned curlypages on top right corner or top left corner.
Starting with curlypage version 6.x-3.4 your top curlypages with fixed position will be shown as absolute positioned in IE6 and earlier IE versions, bottom curlypages with fixed position will not be shown at all in IE6 and earlier IE versions.
If you set "wmode" to "window" for your flash movie or you don't set that parameter at all, which comes on the default window wmode applied, that movie would be render, on most browser, on top of any other content that overlaps it, no matter if the other content is over the movie. The correct wmode values to let other content that overlaps your flash movie to be render in their correct positions are "transparent" if you need any tranparency on your flash movie or "opaque" if that movie does not need tranparency.
In the following examples you can see that effect. To make the test you have to narrow your browser window to make curlypage and flash clock overlap when curlypage is opened.
You can do it yourself if you still want to. What you can't change is any file or folder name inside the curlypage folder (curlypage inner folder, curlypage.module file, curlypage.admin.inc file, ...) but you can change the curlypage folder name itself to whatever you want and the module would work fine. Nothing on code depends on that. All files in that folder (flash movies, sample images...) would be found no matter the folder name, the code would find the folder name in which curlypage module is installed.