I had this problem. Running winXP screen resolution 1600x1200. solution: I opened another application (in my case it was windows commander, but it can be anything else. I can open windows explorer, or my computer.) Then I start the export process in Poser and when the dialog box appears I switch to that application. Just select it on the taskbar or use alt+tab. then i select poser again. this time the dialog box allows you to check/uncheck whatever you want. once the export is done you can close that application. sorry for a messy explanation, it's difficult to write so early in the morning.