Yes,
You can use the IDOC Type ORDERS05.
You can follow the below links
http://scn.sap.com/thread/1335987 -This will be for vendor create/change..you can do similar settings.
Please do the sequence manner and let us know if you got stuck and which step.
While posting what are the steps you have completed please post detailed so that we can answer quickly.
Regards,
Vadamalai A