I also have the 850 and love it but am curious about the above statement. I have macros set up to go from TV/Sat to disc player with one button and back with one button. I can pretty much switch anything with a one button macro. it takes a bit to get the hang of it but once you do no problem.
I haven't looked at Alan's remote file, but in some cases you can run into tasks that are hard to get down to a single step because of a lack of discrete input codes.
One problem that has come up is I bought a new computer last Nov. and it only has USB connections. I can no longer connect the 850 to my computer because the 850 needs a pin connection. anyone have any thoughts?
USB-to-serial adapter should do the trick for you. I haven't tried one with my MX-700 yet, but I will have to at some point since the MX-700 is still in use in the bedroom and our old PC (which had a serial port) went away shortly after I made some changes. The next time I change anything in there, I'll need to use a USB-to-serial adapter to update the remote accordingly.