mssql_*() functions and stored procedures

Looking through the documentation, I see that I can use mssql_init() mssql_bind() mssql_execute() to execute those stored procedures that have parameters. But what about those SPs which just return a value? If I have the following SP CREATE PROCEDURE MySP AS DECLARE @resultCode int SELECT @resultCode = 539 RETURN @resultCode GO And execute the above as follows DECLARE @result int; EXEC @result = MySP; PRINT @result; within Query Analyzer, how do I emulate this using the mssql_*() functions? Whenever I try to just run the EXEC, I keep getting an error message saying that I have to declare the @result variable. I've tried to declare the variable in a seperate mssql_query() call but that doesn't seem to have an effect. So how can I do this w/o getting an error w/r/t variable declaration? thnx, Christoph