Hi Jeremy

The following code will do what you want

Sub Consolidate()

Dim i As Long, lr As Long
Dim wss As Worksheet, wsd As Worksheet
Dim rng1 As Range, rng2 As Range
Application.ScreenUpdating = False
Set wss = ThisWorkbook.Sheets("Sheet1") ' Source
Set wsd = ThisWorkbook.Sheets("Sheet2") 'Destination
lr = wsd.Cells(Rows.Count, "A").End(xlUp).Row
If wss.AutoFilterMode = False Then
If wss.Range("A1") < "" Then
wss.Rows("1:1").Insert Shift:=xlDown
End If
wss.Range("A1:B1").AutoFilter
End If
For i = 1 To lr
Selection.AutoFilter Field:=1, Criteria1:=wsd.Cells(i, 1).Value
Selection.AutoFilter Field:=2, Criteria1:=wsd.Cells(i, 2).Value
Set rng1 = wss.AutoFilter.Range.Columns(3).Cells
Set rng1 = rng1.Offset(1, 0).Resize(rng1.Rows.Count - 1, 1)
Set rng2 = rng1.SpecialCells(xlVisible)
rng2.Copy
wsd.Cells(i, 3).PasteSpecial Paste:=xlPasteValues, Transpose:=True
Next i
Application.ScreenUpdating = True
End Sub

Copy the Code above
Alt+F11 to invoke the VB Editor
InsertModule
Paste code into white pane that appears
Alt+F11 to return to Excel

To use
Select sheet containing the PT's
Alt+F8 to bring up Macros
Highlight the macro name
Run


--
Regards
Roger Govier

"Jeremy" wrote in message
...
I have a rather large database with two sheets of data. I want to take
sheet
two and put the data in column C to sheet one column C where A and B match
on
both sheets.

Sheet One
A B C
1 100 4
2 200 1
3 200 2
4 200 5


Sheet Two
A B C
1 100 4 CAR12
2 100 4 WIL13
3 100 4 CAR14
4 200 1 CAR15
5 200 1 CAR16
6 200 2 CAR17
7 200 5 WIL18

What the result should look like
A B C
1 100 4 CAR12; WIL13; CAR14
2 200 1 CAR15; CAR16
3 200 2 CAR17
4 200 5 WIL18