[Lazarus] Another newbie question

[Bill de Carle]

I would like to add a feature to my application but can't figure out 
how to do it.
Basically, when the user clicks on a button in Form1 I'd like a new 
window to open
up somewhere else on the desktop.  This new window is only for 
displaying lines of
text which I already have as strings in RAM.  As each new item is 
entered via Form1
I'll send one line of text to the new window, appending it to 
whatever is already
displayed in that window.  The new window should have a vertical 
scroll bar in case
the number of lines becomes too large to view all at once.  The user 
should have the
ability to operate the scroll bar and to click on a red X at the top 
right corner of
the new window to close it when he gets tired of seeing it.  Of 
course, my code will
need a way to learn when the new window has been closed by the user 
so I don't keep
sending additional lines to it.  I've seen this feature on several 
Windows programs
so it must be already in the can somewhere.  I don't know enough of the Windows
jargon and I have no idea what the accepted name of such a component 
might be.  I
thought I might be able to use a Tlistbox widget on a separate form 
but when I asked
Lazarus to open a new form it automatically created a new unit as 
well and everything
got more complicated.  Can someone please provide a hint or tell me 
the name of the
component I need?  Perhaps there is an example somewhere.
Thanks in advance,
Bill