My pleasure (just make sure you post up your results when you're done to help the next guy out). That one is on my wife's 2006... I'm not sure what the changes are on the 08 TB's though. It could actually be bolted to the rotating throttle shaft and the tang be depressed by a stud or bolt protruding somewhere along it's throw. Getting some help making something shouldn't be hard at all, snap a couple clean pics and post here. If you fab a bracket yourself just start with construction paper or cardboard for your template.
I'm sure there's others out there that have already done it as well, so check on some of the other boards too.
The simplicity of what needs done is in the fact that (if not for the asthetics) it can be setup and done with a tang right off your throttle grip on the handlebars.
Todd