Simple anwer for your initial question is that to move the cursor to the start of the line you just need to send a carriage return character Chr(13).

Here is a simple example:
Code:
For $i = 5 To 0 Step -1
	Chr(13) $i
	Sleep 0.5
Next
Chr(13) "Done" ?


Of course you still don't know where you are on the console (other than that you are in column 0).

Another option is to use an external program which will tell you where you are on the screen.

I have a small executable (7k) which will report console size, buffer size, and the current cursor position.

It will also provide a screen-dump of the visible console in a KiXtart friendly format.