eyalmaoz

Thanks to your help - i succeeded to put mp3 and movie files in my Galaxy Gt i7500.

How:

1) i installed the drivers from the New Pc Studio drivers and the software.
2) i used additional driver from the file samsungADB. It got installed too. I think it helped!
3) when i plug the phone to the computer USB - i did not use the software NPS to access the phone. I opened notification bar (by touching the upper line in the screen - in the home screen on the phone - and dragging it down). Then - I clicked on the USB option and chose " Mount". Then i could see the phone as a separate drive of my computer - and drag mp3 folders and mp4 movies to it. simple.
4) in order to see what is on the phone you have to open the notifications bar again and choose to disconnect the USB option.
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Now let's see if i can figure out how to add the Market option into my phone.

Thanks again!