I have installed D COM server1.35 and can send a line of R code and get a result from my VB (.net) program. So I located all the R commands in a file ("a.R") in the dir path ("c:\") then call VB using source as below. Dim RLink As StatConnector RLink = New StatConnector RLink.Init("R") dim str str = "source(" + """" + "c:\a.R" + """" + ")" RLink.EvaluateNoReturn(str) I got an error message : An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in MY_VB.exe Additional information: Object is static; operation not allowed "a.R" has codes to load RODBC package and collecting and running query result to the Oracle DB. How can I run the R-code script remotely from VB program ? I appreciate your help. Regards, Tae Sik Han.