Sorry got confused with another thread :P
http://www.megaupload.com/?d=GGAPPHIE
http://www.megaupload.com/?d=AE1SEO0G
But it sounds like all the drivers are correct. You don't need the adb one unless you want to open a shell to your phone. And the download one is only needed if you want to use odin.
So.. if you have the latest NPS 1.3.0 IH4 that i posted above, you should be able to click the update button, switch to the phone tab at the top, and click update.
The O2 II4 firmware has just been added to NPS today too.