Batch How to

[LHume]

Can anyone tell me how to create a batch that will do the following:

1. Rotate pictures automatically if they are not already in landscape so all photos are landscape.
2. Convert all images to 300x300 DPI.
3. Resize all images maintaining aspect ratio, to 1800w (maximum) x 1200h (maximum)
4. Save to original file.
5. Print photos in batch.

[xnview]

1. Rotate pictures automatically if they are not already in landscape so all photos are landscape.

this step can't be made