Well, I got Opera to work 95 %. The only issue is you can not start a new thread or post a reply. Only the "print" ion appears in the top bar and bottom bar on thread/forum.
Go to Tools--->Quick Preferences--->Edit Site Preferences--->Network--->Browser Identification--->(and choose) Internet Explorer
Go to Tools--->Quick Preferences--->Edit Site Preferences--->Network--->Browser Identification--->(and choose) Internet Explorer