Jack,
Thanks for the BOL quote. I find it somewhat amusing that MS states that sys.traces should be used instead of fn_get_trace_info on the sys.traces page; however, on the fn_trace_getinfo page makes absolutely no reference to sys.traces (even in the 2008 documentation).
Here is a link to the 2008 documentation
http://msdn.microsoft.com/en-us/library/ms173875.aspx
-Adam