Duble Click On List Box To Open Form And Subform

I have the following code attached to a form:
Private Sub Go_To_Project_Click()
On Error GoTo Err_Go_To_Project_Click
Dim stDocName As String
Dim stLinkCriteria As String
stDocName = "Project Main"
stLinkCriteria = "[R&D ID#]=" & Me![lstsearch]
DoCmd.OpenForm stDocName, , , stLinkCriteria
Exit_Go_To_Project_Click:
Exit Sub
Err_Go_To_Project_Click:
MsgBox Err.Description
Resume Exit_Go_To_Project_Click
End Sub

Private Sub txtsearch_AfterUpdate()
Me.lstsearch.RowSource = "Select [R&D ID#], [SKU#], [Project Name], [Construction level], [Manufacturer], [Hobbico Status], [R&D Work By], [Product Manager], [Desktopper]" & _
"From [Project Main]" & _
"Where [Project Name] like '*" & Me.txtsearch & "*'" & _
"OR [SKU#] like '*" & Me.txtsearch & "*'" & _
"OR [R&D Work By] like '*" & Me.txtsearch & "*'" & _
"OR [Product Manager] like '*" & Me.txtsearch & "*'" & _
"OR [Desktopper] like '*" & Me.txtsearch & "*'" & _
"OR [R&D ID#] like '*" & Me.txtsearch & "*'"
Me.lstsearch.Requery
End Sub


Private Sub Exit_Search_Click()
On Error GoTo Err_Exit_Search_Click
DoCmd.Close
Exit_Exit_Search_Click:
Exit Sub
Err_Exit_Search_Click:
MsgBox Err.Description
Resume Exit_Exit_Search_Click
End Sub

Basically a text string is entered in the txtbox and a list of matching records shows up in lstsearch box. One selects the desired record in the lstsearch and clicks on the "Go to project" button and the appropriate form (aka "Project main") and subform (aka Project History) open up with the desired record and record history.

What would I need to add to lstsearch so the users can double-click on the record to open it instead of selecting it and clicking on the "Go to project" button?

Thanks

mafhobb