SQL Question

Hi,

   What would an SQL statement look like that is doing an insert into an 
existing table with
numeric fields? The catch is the selected data is being summed before being 
inserted.
  My query looks something like this:

   INSERT INTO @BPDSPFW SELECT                                     
             PRPRTY,PRPSUB,PRPDES,PRODYR,PRODMO,SUM(ENTINT)                   
             FROM LIB990/GBPDSPF 
             GROUP BY                                                 
             PRPRTY,PRPSUB,PRPDES,COANL,VNAME02,PRODYR,Prodmo   

 The message I get back (Conversion error on assignment to column ENTINT.) 
indicates that the Summed field is not correct for the target. In response to 
the message I
modified the query using the decimal statement:
   
                  
INSERT INTO @BPDSPFW SELECT                                  
             PRPRTY,PRPSUB,PRPDES,PRODYR,PRODMO,decimal(SUM(ENTINT),9,8)   
             FROM LIB990/GBPDSPF  
             GROUP BY                                               
             PRPRTY,PRPSUB,PRPDES,COANL,VNAME02,PRODYR,Prodmo 

This yielded the same error.

 Any thoughts?

Note: The target field ENTINT has a total length of 9 with 8 to the right of 
the decimal.

 Thanks,
 Vance