You can install the Drivers from here:
I installed them on my Windows XP SP3, and it worked for me!!
Follow the instructions carefully of the 1st site... since the drivers need to be manually installed.
Following the XP instructions...
If you want MTP connection, between step 6 and step 7 you have to select "MTP Device" interface (even if it's not certified!).
If you want ADB connection, between step 6 and step 7 you have to select "ADB Composite..." interface (even if it's not certified!).
NOTE: if you choose ADB simple interface it will not work, and you will have no ADB connection. it has to be the ADB Composite interface!
For some whatever reason I couldn't get them to work simoultaneously, only one at the time... so everytime I wanted to switch from MTP connection to ADB connection (and vice-versa), I had to reassign/reinstall the drivers again on Device Manager...