Loop through and Insert Numbers into URL of RichEdit component (Code Supplied)

Hello All;

  I am using the following code to created a list of Links to our companies Website(s).
But instead of it working like it should, it is not working at all.

=================================================
procedure TProject1.OButton1Click(Sender: TObject);
var
CID, Con : String;
I : Integer;
begin
  RichEdit3.Clear;
  for I := 0 to RichEdit2.Lines.Count -1 do
  begin
  CID := StringReplace(RichEdit1.Lines[i], ' ', ' ',[rfReplaceAll]);
  Con := StringReplace(RichEdit2.Lines[i], ' ', ' ',[rfReplaceAll]);

 RichEdit3.Lines.Add('http://www.sitename.com/content_by_cat3.asp?contentid='+RichEdit1.Text+'&catid='+RichEdit2.Text+'');
 end;
end;
=================================================
The [RichEdit1] Contains the ContentID #'s
The [RichEdit2] Contains the CatID #'s

Like so:
RichEdit1 has the following Values for ContentID=
56
57
58
59

RichEdit2 has the following Values for CatID=
1
2
3
4

The output needs to look like this in the RichEdit3:

content_by_cat3.asp?contentid=56&catid=1
content_by_cat3.asp?contentid=57&catid=2
content_by_cat3.asp?contentid=58&catid=3
content_by_cat3.asp?contentid=59&catid=4


I hope I explained it well enough?
Thanks All, this is sort of agrivating me, as I can make it work any other way except this way.

Carrzkiss