I could only find one post regarding infrared devices and it was for Parallels version 3. Unfortunately, he never did get it working. I have a Polar heart rate witch and a Uwatec diving computer and both communicates with Windows only. I am thinking about getting version 7 and install my infrared USB with Parallels. I have a May 11 iMac with eight megs of RAM. Should this work OK or would I expect issues?