If you format the cell to 00000 then go back to it as you describe, then the format is special, the locale US and it is a zip code.
What has happened is that your format of 000 just heppens to co-incide with one of the preset Taiwanese codes, so when you go back to look again it can't tell the difference.
Will always happen if a custome format you input co-incides with a preset special.
Last edited by stickyb; 23rd Mar 2005 at 05:48.