You can find the USB and Modem driver at http://www.samsungmobile.co.il
Hope it helps
Unfortunately you cannot download/upload ringtones, or downloaded media (music/movies). I am still looking for a way around the problem. I have read some other posts that say these options are "disabled" on the phone by the provider (a couple of bits stored somewhere), and the PCLink 2003 software complies by not making these options available to you.
I might end up writing my own PC-Link program if I fail to find anything. That would mean reverse-engineering the PCLink software and USB->Serial protocol, but it could be the only option...
I am seriously pissed off with Samsung about this. If I spend 3000+NIS on a phone, I expect to do with it what I please!!!