posting idoc file into SAP


I have idoc file 'ORDERS03' (.IDC format) in my PC and i want to post this in to SAP.

I found the program RSEINB00 to post the idoc file into SAP,but when i run program by give the path name 'C\doc...." it throws error showing "Error at OPEN 'C:\'.

Is it possible to post the idoc file from Presenatation server to SAP ?

If not ,can anyone help me to create a structure for my idoc file to upoload into application server?