Yes, the Corecon handheld solution has been out for about 3 months now. If you go to the login page from your handheld browser, it should redirect you to the login page for the handheld. Just type in app.corecon.com in your handheld and it should take you to the login page.
Sometimes with a BlackBerry you might have to set your browser to emulate IE. This option is found under browser settings.
Hope this helps.