Hi,
You need to have a text file something which looks like this:
1 1000 2000 3000
2 2000 3000 4000
Basically it's 4 numbers with spaces in between. The first number is the frame number, the next 3 are the x, y and z coordinates respectively. Each line above gives the coordinates for a different frame. You can have floating point/real numbers like so:
1 1000.5 2000 3000.0
Save the file with a .chan extension. You can use WordPad to create the file, but be sure to use the "Text Document" format/type when you save it.
Regards,
Jo