Hi Clara,
You can access your sd card using a card reader and modify or delete the files stored in it easily. just copy them from the sd card to your system and the recopy them to your sd card. Now you'll be able to access all the files on your phone.

Let me know if u still face any problem.

Regards
Mark David

About the Images:
I did that, but when I look for the image on the new phone, the image has a lock and I can see or use the image on the new phone.

About the Ringtones:
When I check it on my computer they don't have a "mp3" end.... Example: Yael Naim - New Soul.mp3-drm
Why is that? What the "drm" means?

About the Images:
I did that, but when I look for the image on the new phone, the image has a lock and I can't see or use the image on the new phone.

remove the sd card and Try formatting your phone..or click on restore factory settings..and then insert the sd card into it.

.DRM extension is for Cubase Drum File. Cubase is a music production program

That about " Cubase Drum File" is very interesting. Where can I download it?

See their website for the software http://www.steinberg.net/

I checked, but it doesn't have a trial area. Is there a place where I could get a trial from the program?

I wonder about the same.... A trial area, so I can check the program out.
Ok, that's about the ringtones, but I'm still wondering about the images too.

I accesses my SD Card using a card reader and copied the files (images) and stored them. But when I look for the image on the new phone, the image has a lock and I can't see or use the image on the new phone. How come? What can I do to take the protection off the images?

One more thing is that the images (and music) that were saved directly on the SD Card are saved with the end ".menc" (example: "Angel Butterfly.jpg.3e906d84.menc"). What does that mean?

Try formatting your sd card and store all the files again..