Couple ways:

1) Format the cell as Text: Format->Cells->Text
2) Enter the zip code with a ' preceding the number, i.e. enter 00345 as
'00345
3) Enter the zip code with the formula ="00345"

Number 1 will probably be most usefull to you.
--
Regards,
db


"S_Suarez" wrote:

> I am trying to do a mail merge for a mass mailing I need to do. I am trying
> to input zeros in the zip codes that start with zero. When I type in the
> zero, Excel automatically erases it. How can I input a zero without having
> excel automatically erase it?