I'm so in love with the Internetz, I think I'll marry it.
I just semi-borked a load test I was supposed to be tracing...perfmon wouldn't start at the last minute, and in the scramble to get it going, I not only forgot to start my SQL trace, I also left the perfmon output file in BLG format. Honestly, I'd never paid any attention at all to the BLG format. As it turns out, that's the binary output format.
I did a search and came up with this Grant Holliday blog about Relog.exe. Relog is included in Windows, and you can use it from the command line to (among other things) convert a binary perfmon file to CSV.
I. Love. The Internetz.
Here's the command I used to get my readable, Excel-formattable numbers: relog logfile.blg -f csv -o logfile.csv
Jen McCown, http://www.MidnightDBA.com