Can I hook up a sata II drive to a sata I port or will this not work?
Yes this will work but you will just get SATA I speeds and not SATA II speed. But thats not big problem
To expand on rev's post...
Its not like he's really going to be limited by the 150MB/sec SATA I is supposed to be able to handle. The drive itself is likely well below that max. So the speed advantage of SATA II doesn't even come into question.