Unable To Submit More Than 8000 Characters With Stored Procedure

Hi all,

I have a internet page written in asp to submit into authors
curriculum vitae publications (title, author, year, etc.).
If the author submit less than 8000 characters it functions OK, but If
the author try's to submit more than 8000 characters the asp page does
not return an error but the text is not saved in the database or,
sometimes, it returned a "Typ mismatch" error.

Here is the sp:

---------------------------------------------------------------------
CREATE PROCEDURE sp_CV_publications
(
@formCommand
nvarchar(255)='process',
@id numeric=null,
@id_personint=null,
@typPubID tinyint= NULL,
@publicationstext=null
)
AS


if @formCommand='process'
begin

INSERT INTO CV_publications(
idperson,
typPubID,
publications

)
VALUES (
@id_person
@typPubID,
@publications
);
select 1 as status, @@IDENTITY AS insertedID, * FROM
CV_publications WHERE id=@@IDENTITY
end
----------------------------------------------------------------------------


The server is running IIS5 and SqlServer 2000


Any ideas ???