I found the SerialIO.com site via the Apple Developer Connection. I knew it had to be a good outfit if Apple was willing to suggest them as a source. I purchased the SerialIO SerialPort Java package and it worked right out of the 'box'. Then, a month later, I ran into a problem which coincided with my purchase/use of a MacPro after my G5 konked out. Sadly, things did not work on this Intel-based machine. I was concerned about OS/Java hassles - and wrote to SerialIO support. Shortly thereafter I got eMail support which helped me isolate the problem and determined I was trying to work with a file that had become corrupted. Thanks to the rapid response from SerialIO support I was able to get back to doing useful work - despite the self-inflicted gunshot wound to my foot. Here's a collective word out of "You deh Mann!" to SerialIO Support.
Lance Drake Contract Mac Developer - Santa Fe, NM