Hi, thank u so much for the software. im a bit slow with these things and need a bit of help with my 1st poster. I wannt to create a mosiac so that i can get it printed as a poster. The poster size is 45" by 30" so how do i do that on the program???? and how many tiles would you suggest. please help asap. thank u

The default settings are fine.
Set *Mosaic Size* to the value 45".
Get as many images as possible for the tiles.