Yeah I see now off of MSDN that those lead and lag functions are only supported in SQL Server 2k through the MDX Functions. (Analysis Manager) So without these lead and lag functions at my ...

The ZLAG and ZDIF functions are like the LAG and DIF functions, but they are not counted in the determination of the program lag length, and they replace missing values with 0s. The ZLAG function ...

Identifying Transfer Function Models The CROSSCORR= option of the IDENTIFY statement prints sample cross-correlation functions showing the correlations between the response series and the input series ...