thanks for your help, it works! but I do have another problem. The newly added field just doesn't show up at the view profile page, but I can see it at join page & edit profile page. See below link. I don't see any problem with the setting ( newly added field is "Ethnicity"

[url]http://i49.servimg.com/u/f49/11/89/38/49/ethnic12.jpg[/url]