I think you need to fully read the documentation before you try something.
CREATE TRIGGER TR_UPD_tblUser ON tblUser
FOR UPDATE, delete
--NOT FOR REPLICATION
AS
BEGIN
insert into tblAU
([anbrID]
,[intCompanyID]
,[strFirstName]
,[strLastName]
,[strDepartment]
,[strUserID]
,[strPassword]
,[strTitle]
,[strTelephone]
,[strTelephoneExt]
,[strFax]
,[strCellPhone]
,[strEmail]
,[strWebEmail]
,[strUserType]
,[booLocked]
,[booAllowAP]
,[booAllowAR]
,[booAllowIV]
,[booActive]
,[booSuperUser]
,[booQO]
,[intCommodityLevel]
,[booQQLiteUser]
,[booFBA]
,[LandingPage]
,[PasswordExpirationDT]
,[ConsecutiveUnsuccessfulLogins]
,[CreateById]
,[CreateDT]
,[LastEditById]
,[LastEditDT])
select i.[anbrID]
,i.[intCompanyID]
,i.[strFirstName]
,i.[strLastName]
,i.[strDepartment]
,i.[strUserID]
,i.[strPassword]
,i.[strTitle]
,i.[strTelephone]
,i.[strTelephoneExt]
,i.[strFax]
,i.[strCellPhone]
,i.[strEmail]
,i.[strWebEmail]
,i.[strUserType]
,i.[booLocked]
,i.[booAllowAP]
,i.[booAllowAR]
,i.[booAllowIV]
,i.[booActive]
,i.[booSuperUser]
,i.[booQO]
,i.[intCommodityLevel]
,i.[booQQLiteUser]
,i.[booFBA]
,i.[LandingPage]
,i.[PasswordExpirationDT]
,i.[ConsecutiveUnsuccessfulLogins]
,i.[CreateById]
,i.[CreateDT]
,SUSER_SNAME()
,getDate()
from inserted i
END