I want to know how to create a new script that can be run in batch proces in Photoshop Element 11 ?
You may want to ask this on the Photoshop Elements forum.
You can't create Actions on Photoshop Elements. However, many Actions that are created in Photoshop Pro will run in Photoshop Elements. So you'll need to be specific about what it is you're trying to accomplish.
I need a Script to put a signature on my images. The script need to position the signature on the lower left part of the image , merge this in one layer and save the image with the signature.
Can I run this action in a batch process even in Photoshop Element 11 ?
If no, which version of Photoshop ( that I could get for about 100 $ could do this ? )
Have a look at the menu file/process multiple files. You can choose to add your signature (or the caption) to the image and export the new files.
If that solution is not flexible enough, consider using the very affordable (12$) Elements+ add-on which offers a 'meta stamp' script :
Otherwise, have a look at other free and good solutions like Faststone Photoresizer, Xnview...