Open a form for a new record

I have a database that has tables for Clients and Jobs (tblClients and tblJobs)

Currently working is a form to add a new job.
This form has a query that joins tblClients and tblJobs
It is called from a button on a menu form using…
stDocName = "frmNewJob"
    DoCmd.OpenForm stDocName, , , stLinkCriteria
    DoCmd.GoToRecord , , acNewRec

On this form is a field cboClient.  The user selects the Client in this combo box and it populates the client details on the form.  The user then enters the new job information and saves to create the new job.
This is all working fine and has been for ages.

Now I want to do almost the same thing, but calling a copy of the above form – frmNewJobFromEditClient from the client details form.
So when the new form is opened I want it to open as a new record but with the Client details already populated (as if the user had selected the correct client).

I assumed that I would be able to put something like…
Me.cboClient = [frmEditClient].[Client ID]
in the Open event of the frmNewJobFromEditClient form.
I have tried all sorts of options of syntax without success.

Hope someone can help me out.

Regards
Richard