I'd like to thank everyone who chimed in with advice and insights. It was very useful to hear from a group of long-term regular users. We had to do a few more tweaks to the Optacon interface but it now seems to be running well. I will post a link on this list for any publications that arise from this work. Though of course the wheels of science turn fairly slowly and it will likely be a year or more before we're at that stage. Thanks again, Richard Vickery -- Dr Richard Vickery School of Medical Sciences, UNSW, Australia, 2052 ph. 61 2 93851676, fax 61 2 93851059 to view the list archives, go to: www.freelists.org/archives/optacon-l To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.