c# and sql server for windows ce

hello,
i use in c# the following line:
using System.Data.SqlServerCe;
the following error is visible
"The type or namespace name 'SqlCeEngine' could not be found"
how can i fix this problem?Have you added a reference to SQLCe?
Have you installed SQL Ce on the device?
"Steiner Hubert" <nospam@.firemail2.de> wrote in message
news:O9vYtTx6DHA.1596@.TK2MSFTNGP10.phx.gbl...
> hello,
> i use in c# the following line:
> using System.Data.SqlServerCe;
> the following error is visible
> "The type or namespace name 'SqlCeEngine' could not be found"
> how can i fix this problem?
>